Date Palm (Phoenix) Genus Level Details & Allergy Info Home « Phoenix Date Palm Genus Details Date palms are very graceful feather palms originally from Africa and Asia. They are used as ornamental plants in the southern U.S. Male and female flowers are on separate plants. Date palms grow 30-60' tall. The leaves are stiff fonds, spiny at the base and segments are 12-18" long and bluish-green in color. The fruits are fleshy drupes that grow 1-3" long. Date palm (Phoenix dactylifera) Date palm (Phoenix reclinata) Date Palm Allergy Info Males produce abundant amounts of wind borne pollen. The pollen has been reported as quite allergenic. Date Palm Pollen Description No pollen description is currently available. Species in This Genus Add to Bookmarks Phoenix means a person or thing of unsurpassed beauty or excellence. The genus Phoenix is one of the larger in the Arecaceae (palm family) and are easily one of the most popular in terms of landscape use and commercial importance.

They are very hardy adaptable palms growing in many varied climates from the extreme tropics, to the arid deserts and even in the cooler subtropical and temperate climates throughout the world. Probably, as a group, these are the most commonly grown palms in the world.... and arguably ones of unsurpassed beauty and excellence. (Editor's Note: This article was originally published on March 15, 2008. Your comments are welcome, but please be aware that authors of previously published articles may not be able to promptly respond to new questions or comments.) Phoenix palms are pinnate, single to multitrunked dioecious (trees are either male or female, not both) palms from the continents of Africa and Asia. This genus includes some of the fastest growing palms in the world, as well as the tallest. However, one of the smallest palms in the world is also in this group. The true Date Palm, Phoenix dactylifera, is the most economically important palm next to the coconut palm and is a source of food and thatch for dozens of equatorial countries in the old world. The pygmy Date Palm and the Canary Island Date Palm are two of the most commonly planted landscape palms in the world.

The following is an overview of this interesting palm group along with some cultivational information and photos. Phoenix acaulis- I have seen a number of palms identified as this in botanical gardens in both Florida and California, but I have strong doubts about the correct identity of any of these specimens. This dwarf, trunkless Indian palm is one of the least ornamental of the genus having only a half dozen or so wispy, soft leaves at a time. In the wild it is nearly indistinguishable from a clump of grass or weeds. Presumably the presence of mislabeled palms is due to the Phoenix genus being so easily hybridized that seed, even from a true individual can produce hybrid offspring very unlike the female parent. Most palms identified as this species in botanical gardens are short but trunking species, easily 10-100x the size of the true species, and obviously hybrids. Phoenix acaulis growing in Florida... maybe Phoenix canariensis- from the smallest to the biggest.... This is one of the largest, most massive palms in cultivation. As the name suggests, it is a native of the Canary Islands.

Though it doesn't produce any edible dates (they are literally edible, but no one would want to eat them) it is still a commercially important tree, being one of the most popular and costly landscape palms for use as a city street tree, mall tree, or for zoos, botanical gardens etc. One large tree can cost thousands. Thankfully they are relatively ‘easy' to move (high survivability) as long as the trunk is not damaged or it doesn't get too desiccated in the process of moving, or become infected with something. rare variegated plant from the Canary Islands (photo by semillas) This is a solitary, fast-growing, thick-stemmed (2' or more in diameter) palm growing up to a height of 80' or more. Palms in Los Angeles planted over 100 years ago seem to top out about this height and then slowly die. The leaves of this palm are long and arching with the stiff, pointed leaflets coming off the rachis in two slightly different planes, though the overall effect is that of a nearly flat leaf. The leaf color is a light to deep green.

The crown of this species consists of up to 100 leaves over 30' in diameter, so very little sun gets through. Maturing palms create a lot of deep shade thanks to their massive dense crowns. Modified leaves in the form of very sharp stiff spines occur near the leaf bases, making this palm a very dangerous one to prune. These spines grow up to 15" long and can easily penetrate all but the thickest leather gloves and are certainly an ocular hazard. If left to fall naturally the leaf bases leave a rough diamond pattern along the trunk. However, most growers prune the leaf bases to a smooth, almost polished finished making the trunks a living work of art. The tops of the trunks are often pruned carefully leaving much more leaf base giving a bulbous ‘pineapple' look to the pruned crown. Over-pruning is a common practice with this palm and isn't recommended, but is also understandable considering the cost and hazard of pruning. Overpruned palm on the left and a close up of the trunk with the current 'style' of pruning the upper leaves This is a very hardy species able to survive temps just below the 20s.

It also performs well in hot arid climates (though not as well as some other Phoenix species) and is also grown commonly in humid, hot climates, though it definitely seems less happy in these more tropical surroundings. Once established it is a very drought and wind tolerant plant. Soil preferences are few, and it grows extremely well in heavy clay soils most other palms detest. Nutrient deficiencies, at least in California soils, are few and fertilization is often unnecessary. This photo shows the dense leaf crown Old palm in foreground LA with Phoenix dactylifera in back ground for comparison in middle photo... photo on right shows a perfect specimen in a park Some Phoenix are fairly resistant to Lethal Yellowing (a serious viral disease of many palms species), but this one is not. Forutunately that is a rare disease in Mediterranean climates. However, these trees are also exceptionally prone to a fungal infection called Fusarium wilt. This is a disease carried from one infected palm to another palm via uncleaned or poorly cleaned pruning equipment. Many palms in southern California die every year from this infection spread by careless gardeners and landscapers. Sadly, once infected, death is nearly always inevitable.

And once a Phoenix dies of this, the soil surrounding its roots becomes infected with the fungus for many years to come. So any palm that is removed cannot have another Phoenix in it's place or the same end result will occur (other species, such as Washingtonias or Braheas can be put in instead, though, as they are resistant to this fungus). palms pruned frequently in LA sometimes get fusarium wilt transferred from palm to palm Phoenix dactylifera- the true date palm. Originating from somewhere in northern Africa presumably, this is the date palm that makes the edible dates the entire genus is known for. Its actual origins are unclear as this plant has been in cultivation for nearly 5000 years, so what are native populations or introduced ones are impossible to tell. It is thought to be a form of Phoenix theophrastii (native to Crete and northern Africa) harvested and selected for its exceptional fruits thousands of years ago. Now it is grown in hundreds of countries throughout the world as a food and landscape plant. There are dozens of date varieties, though that is another article someday.

2 shots of some groves of cultivated Date palms in the deserts of California This is another tall, fast-growing palm maxing out around 80' as well. Unlike the Canary Island Date Palm, this is a suckering species, though some varieties are more prone to sucker than others. Most cultivated palms are kept pruned back to one trunk not only for landscape purposes but ease of harvesting fruits. Occasionally these palms will actually form a ‘true' branch or two, though most growers remove these- not too ornamental, and eventually get so large they can rip off the main trunk. Phoenix dactylifera has a slimmer trunk than Phoenix canariensis and leaf base scars leave a more three-dimensional, but equally, if not more ornamental naked trunk. The leaves of this species are a glaucous grey-green to dull blue-green, arching and also heavily armed with spines near the base. Leaflets are arranged in two prominent planes giving the effect of being somewhat plumose. The tips of all the leaflets, not just the modified ones, are quite sharp and are potential ocular hazards.

The crown of this species is much sparser in appearance than in Phoenix canariensis and the shade created below is more filtered than total. Phoenix dactyiferas in a zooological park, and close up of the trunk Phoenix dactylifera is also a hardy species tolerating temps down to about 20F. However for purposes of growing viable fruit this palm has to be grown in a warm, arid climate (like the climate of northern Africa or inland southern California or Arizona). It will grow in a humid, tropical climate but not form very good fruit, and cold climates also retard fruit formation. This palm tolerates a lot of moving abuse with palms over 50' having an excellent track record as transplanted specimens. They are very drought tolerant and the leaves are exceptionally resistant to desiccation which may have something to do with ease of transplanting. Suckers can be carefully removed and rooted (as long as some root tissue taken with them)- this is how all special fruiting varieties are propagated. Few other suckering palms are so easily propagated this way.

Standard landscaping variety of Phoenix dactylifera on left, middle photo is of park tree allowed to sucker, and right is the extreme example of a suckering date palm, Phoenix dactylifera var Zahidi Phoenix loureirii is the most difficult species both pronounce as well as spell, which may is why it has several synonyms (hanceana, humilis). It is not a common palm in cultivation, at least compared to most other Phoenix species, but it can be a fantastic landscape palm. This species is one of the most variable in form as well as diverse in origin (India, China, Philippines etc.). It can be found in the lower Himalayan forests where it may snow occasionally, to the jungles of the Philippine islands. Some forms are suckering and some solitary, some tall, some short and stocky. Combine this variety with the likelihood of hybridization in cultivation and this palm becomes a very difficult one to describe accurately. form sometimes referred to as Phoenix hanceana Some divide it up into two forms: Phoenix loureirii var loureirii, and Phoenix loureirii var humilis.

The former is the more commonly encountered variety in botanical gardens and it looks a bit like a miniature Phoenix canariensis (sometimes suckering, but usually 1-3 stems only). The stem of this form is often irregularly marked with very closely spaced leaf scars, belying is relatively slow growth rate. The leaves are dark green, stiff, forming a dense, impenetrable crown of spiny leaflets, coming off the rachis in two distinct planes. Some forms of this have blue-green leaves with very sharp, stiff leaflets, and some carefully have selected these for cultivation. Sometimes these forms are referred to as Phoenix 'hanceana'. solitary and suckering examples of Phoenix loureirii var loureirii The other form (var humilis) is invariably a suckering tree with thinner trunks and neater, sparser crowns. The leaves on this species have leaflets that appear to be in a single plane, or nearly so, in contrast to the markedly distinct planes seen in the other variety. This variety is much less common in cultivation. That the two are even related is hard to believe sometimes as they about as unalike as any Phoenix species.

However, the basis for the varietal designation is strictly based on minute floral morphological differences only. I will never understand taxonomists! example of the humilis variety of Phoenix loureirii Both forms seem to have fairly good cold tolerance down to the low 20s and tolerate drought, wind, tropical humidity and arid heat equally well. trunk detail of Phoenix loureirii Phoenix paludosa- the Mangrove Date Palm. This is a Phoenix from the truly tropical environments of Sumatra and Malaysia and one of the least commonly grown Phoenix in cultivation. This small, suckering plant slowly grows in swampy jungles up to 15' tall and small clumps 5'-10' in diameter. The stems are relatively thin for a Phoenix (3"-4") and are usually bent or twisted. Leaves are pale green to grey-green and lighter still on the undersides. The leaves are somewhat soft and droopy, though still armed near the leaf bases. Leaflets are only somewhat stiff and not too dangerous. Cold tolerance of this plant has probably not been fully tested, but so far little or no damage has been seen at temps down into the high 20s.

Phoenix paludosas in the tropics, and in southern California Phoenix pusilla- the Ceylon Date Palm. This Indian palm (also from Sri Lanka) is another uncommonly grown palm in cultivation mostly due to is less than ornamental appeal and pugnacious nature. It is a shrubby solitary to sometimes suckering species with sharp leaflets that come off the leaves in two distinct planes, making a low-growing impenetrable bush. Older, solitary specimens do eventually form a somewhat ornamental wicker pattern on the trunk from the retained leaf-bases. It is a very slow species and such individuals are fairly old. It's cold hardiness seems to be about on par with Phoenix paludosa- around the mid to higher 20s. Phoenix pusillas in California and Florida. Plant on right very old and possibly hybrid example, but showing typical wicker pattern of retained leaf bases on trunk Phoenix reclinata- the Senegal Date Palm. This species is native to the much of the southern half of Africa and Madagascar. It is a large, suckering species growing up to 40'-50' tall on relatively skinny trunks about 8"-1' in diameter.

The trunks are covered with black fiber and retained leaf bases (except in very old plants, which can have some bare trunk). Leaflets are generally in 2 planes only offset by a subtle angle, but this trait is quite variable in cultivation, presumably due to the lack of purity of the species (finding a non-hybrid Phoenix reclinata is a difficult task). The leaves are flat-looking from far away- plumose-looking Senegal Date Palms are usually hybrids. Leaves are about 10'-15' long and the leaflets are slightly spiny and bright green. The leave bases are armed with stout, very sharp yellow-orange spines. two examples of Phoenix reclinata in cultivation This is a moderately cold hardy palm, though reportedly true Phoenix reclinatas are only mildly frost hardy. Most palms cultivated as this in the US are quite hardy- down to nearly 20F, but these are invariably hybrids. This palm is otherwise very adaptable to dry, humid, hot, or cool (frost-free) climates and a wide variety of soil types and pHs. This ‘species' is a very popular landscape palm in front of hotels, malls, parks and even large indoor areas with skylights.

Like most Phoenix it is fairly easy to move with little risk of killing the palm, as long as the root-ball doesn't dry out. This palm is only slightly sensitive to lethal yellowing. true palm in central Africa (photo by Kylecwaza) Phoenix roebellenii- Pigmy Date Palm. This is probably the most commonly used landscape Phoenix by homeowners, though it is also used extensively in commercial landscaping. This Asian palm originates from Laos, Vietnam and South China- very tropical climates for such a versatile hardy species. The wild form of this plant is a suckering, thinly crowned plant, sometimes referred to as Phoenix roebellenii Reasoneri in cultivation. However, the most commonly encountered forms of this species in cultivation is as a solitary, more thick-stemmed plant with a thick, luxurious crown of soft, bright-light green leaves. It is interesting that though most cultivated plants are solitary, they are often planted in clusters of individuals giving one the impression that they are indeed clustering palms... however, the clusters of individual palms are still less intensely clustered than the true forms get- the native forms sucker very profusely and eventually form massive thickets of shrubbery, full of twisted, gnarled stems.

It is a less than ornamental palm in its original form. The cultivated Phoenix roebellenii grows to about 10' or more in height and has a fiber-coated to naked trunk about 6" in diameter. Leaflets are distinctly soft and droopy though the leaf bases still retain some viciously spiny modified leaves, so care needs to be taken when pruning. Typical palm in tropical climate 'W ild type' suckering plant in California This is a mildy cold hardy species being damaged from cold in the upper 20sF, but usually surviving temps down below 25F (just defoliating). This is a water-loving species and it is very difficult to overwater this one. Fortunately it is not picky about soil, so if grown in clay, watering needs are lessened somewhat. It does well in most climates, but prefers some protection from hot, arid summer afternoon sun to look its best. Some grow this as an indoor palm though its lighting needs are intense. Phoenix roebellenii for sale at garden outlet center Used in public landscaping relatively common sight- multiheaded palm Phoenix rupicola- Cliff Date Palm.

This is an Indian species and some consider this the most ornamental of all the Phoenix. It is a solitary species up to 25' tall or more, with long, arching, soft, deep-green leaves, with all the leaflets in a single plane. This is one of the few Phoenix with no vicious leaf-base spines- there are still some soft spine-like modified leaves, but they are soft and flexible, without a sharp tip. It is hardy to only the upper 20s, though it can survive temps down to 25F with only moderate leaf damage (usually survives such a freeze as long it's brief). It is a moderately slow growing species but still a decent landscape palm. For some reason this palm often shows some degree of nutritional deficiency in California having very yellow leaves typical of a magnesium deficiency in situations where no other Phoenix show any problems at all. This situation is lessened if it is grown in partial shade. This species seems to prefer particularly rich soils.

healthy green plant in partial shade, and severely nutrient deficient plant in full sun, southern California two more healthy ones in southern California parks Phoenix sylvestris- Silver or wild date palm- This is an Indian and Pakastani species and is a large, solitary trunked, tall tree (up to 50') with a dense crown of stiff, grey-green leaves (about 100 or more). This species looks a lot like a slightly ‘stiff-leaved' Phoenix canariensis. In fact, it is often confused for one, or vice versa. Again, hybridization muddies the picture a bit and many palms in cultivation may indeed be part Phoenix canariensis, or Phoenix loureirii or dactylifera. It is slightly less hardy to cold than Phoenix canariensis and about as unhappy in warm, humid climates as well. It is a great desert landscape palm and quite drought tolerant. It is quite slow growing however, so tall mature palms are many decades old. Phoenix sylvestris (the realy thing) in southern California Phoenix theophrastii- some consider this the ‘wild type' of Phoenix dactylifera as the two are very similar.

This species seems to sucker much more profusely, however, and the leaflets of this species are incredibly spiny, making it the most painful/dangerous of all the Phoenix species to prune. Leaf color is grey-green but the petioles are an attractive yellow with dark brown making it a moderately ornamental species as long as one keeps the suckers pruned back. It is native to the Mediterranean coasts and Crete. Cold hardiness is about the same as Phoenix dactylifera, as is just about all other aspects of its cultivation. However it does not make good-tasting fruits (edible, yes, but pithy). Phoenix theophrasitii in cultivation close up of leaf bases showing typical spines of nearly all Phoenix sp. There are several other species of Phoenix: andamanensis and caespitosa, but these are very rare in cultivation and I have yet to see one of either. The former is from on island off southern India and the latter from Somalia.

hybrid palms: Phoenix roebellenii x paludosa; Phoenix reclinata x dactylifera; Phoenix reclinata x roebellenii Phoenix canariensis x reclinata Phoenix canariensis x roebellenii Phoenix canariensis x rupicola Last and least are the metallic Phoenix one can catch a glimpse of all over the southern California landcape, known as Phoenix sp. 'Cell Tower' Genus Phoenix - Plants @ Thewebsiteofeverything.com Genus Phoenix Phoenix most often refers to: Species in the genus Phoenix of plants Cliff Date Palm Cliff Date Palm - The palms have solitary trunks, to 8 m in height and 20 cm in width, usually clean of leaf bases except near the crown. Leaves are 2.5 to 3 m long, 35 cm leaflets, pinnately arranged, on 50 - 60 cm pseudo petioles armed with spines. The spines are much less numerous and less vicious than the other Phoenix species. The fruit is an oblong, yellow to orange drupe, 2 cm long containing a single large seed.

Theophrastus's date palm Theophrastus's date palm - Phoenix theophrastii grows up to 15 m tall, usually with several slender stems. The leaves are pinnate, 2-3 m long, with numerous rigid greyish-green linear leaflets 15-50 cm long on each side of the central rachis. The fruit is an oval yellowish-brown drupe 1.5 cm long and 1 cm diameter and containing a single large seed; the fruit pulp is too thin and fibrous to be of agricultural significance and has an acrid taste though the fruits are sometimes eaten by the locals. Phoenix | plant genus | Britannica.com plant genus THIS IS A DIRECTORY PAGE. Britannica does not currently have an article on this topic. Learn about this topic in these articles: in palm (tree): Distribution ... Elaeis (oil palm) and Raphia (raffia palm, or jupati) in Africa and America, and Borassus (palmyra palm), Calamus (rattan palm), Hyphaene (doum palm), and Phoenix (date palm) in Africa and Asia.

Numbers of individuals of a species may be few or many. in palm (tree): Evolution ...modern families of flowering plants. By the beginning of the Eocene Epoch, nearly 56 million years ago, palms were widespread and abundant. A diversity of genera, including Phoenix, Sabal, Serenoa, Livistona, Trachycarpus, and Oncosperma, existed in the United States, Canada, India, Europe, and China, many in places where palms do not occur today. These... Date Palm (Phoenix) Genus Level details and Allergy Info | Pollen.com Deciduous Allergy Information Males produce abundant amounts of wind borne pollen. The pollen has been reported as quite allergenic. Genus Details Date palms are very graceful feather palms originally from Africa and Asia. They are used as ornamental plants in the southern U.S. Male and female flowers are on separate plants. Date palms grow 30-60' tall. The leaves are stiff fonds, spiny at the base and segments are 12-18" long and bluish-green in color. The fruits are fleshy drupes that grow 1-3" long.

Pollen Description Genus Distribution The shaded areas on the map indicates where the genus has been observed in the United States. - Native, observed in a county - Introduced, observed in a county - Rarely observed Date Palms - Phoenix Palms All major credit cards accepted Date Palms by Phil Bergman The True Date Palm and other Species of Phoenix Palms DATE PALMS (ALSO KNOWN AS PHOENIX PALMS) Covered in this Article: DEFINITION OF A "DATE PALM" DESCRIPTIONS OF THE MAIN PHOENIX SPECIES CHARACTERISTICS OF EACH SPECIES FREQUENTLY ASKED QUESTIONS ABOUT DATE PALMS Introduction "What is a Date Palm?" Date Palms are a very historically important type of palm tree because they are a source of food that has supplied nutrition to millions of people over thousands of years. But, before we can really talk about “Date Palm Trees”, we must first decide what we are talking about. When you talk to a taxonomist or palm enthusiast and say “Date Palm”, he will automatically think of the true Date Palm, Phoenix dactylifera. This is the species that makes the date fruit that is so commonly eaten.

But, when you talk to the average person, “Date Palm” may mean any palm in the group or in fact, any palm at all. Some use the term "Date Palm" and "Palm Tree" synonymously. When we talk about the Date Palm, we are discussing the group of palms known as Phoenix palms. This genus would include everything from the true Date Palm, Phoenix dactylifera, to the Canary Island Date Palm, Phoenix canariensis. Many have heard of the Pygmy Date Palm. It is in this genus Phoenix as well. But, only one plant, the true Date Palm, gives fruit that is edible and marketable. Phoenix dactylifera, the true Date Palm. Crown of the true Date Palm from below. The Genus Phoenix and Its Characteristics As a group, there are about 13 different species of Phoenix. All are members of the Date Palm group. Their natural distribution ranges from the Canary Islands across northern and southern Africa into the Middle East, far south Europe, and Asia. Plant size ranges from small to massively tall. Some are single trunk and others are clumped (suckering) with more than one stem. All are pinnate or feather type palms.

In most areas, Phoenix live in rather arid conditions while a few species tolerate much more humid environments. All trees are pinnate and all share a few interesting characteristics. The petioles are armed with spines. These spines are actually a modified leaflet, typical of this genus. In Phoenix canariensis these spines can reach a length up to a foot long and can be dangerous to the eyes and skin. The Pygmy Date Palm has smaller spines, typically three to five inches long, but equally as dangerous to the eyes. Another characteristic of this genus are that the leaves are “induplicate”. This means that, in cross section, the leaves a “V-shaped” upward, i.e. they would hold water in this V-shape. Reduplicate leaves are V shaped downward and much more common in the palm world. You can remember this by the reminder that, with induplicate leaflets, the water "goes in the leaflet". Induplicate leaf, typical of all Phoenix Spines on a removed Phoenix reclinata leaf, juvenile Another interesting characteristic of Phoenix is that all species in this genus are dioecious. This means that any given plant is either a male or a female.

One cannot make viable seeds (or fruit) without a male and a female. Non-pollinated female blossoms will abort and fall to the ground without ever making fruit. Pollen from the males is typically distributed by either wind or insects to the females. In date groves, this may be done manually by workers. Date Palm seeds are formed in large dependent clusters and the fruit is initially green, turning to yellow/red, and finally to a tan/brown or black color. The fruit or pulp layer of the true Date Palm is much thicker than this layer in other species of Phoenix. It is sweet and quite rich in sugar. It is because of this thick fruit layer that the Phoenix dactylifera is the only species grown for consumption of the fruit as a food crop. Female Phoenix dactylifera with immature fruits Male blossom, Phoenix dactylifera As with other dioecious genera of palms, hybridization can occur. This seems to be of particular importance with Phoenix. In habitat locations there is usually very little hybridization. This is because, in an given natural habitat, there is typically only one species of this genus. In other words, there is no other Phoenix species to hybridize with.

But in domestic conditions, such as in a botanical garden or a private garden with many Phoenix species, hybridization is quite common. This has led to variation in the appearance of Phoenix nursery stock as seeds are often obtained domestically where hybridization has occurred. Consequently, we see Pygmy Date and Senegal Date Palms that are not true in their appearance or form. They look a bit different than one would see in habitat. Even more dramatic is when we see a single trunk species that should only have one stem and suddenly starts to sucker with many stems. This is the hybridization at work. If you begin to carefully look at all the Pygmy Date Palms around, you'll start to see this variation in trunk size, crown size, and appearance of the leaves. This is all the work of hybridization. Phoenix as a group are very promiscuous. Culture and Growth of Phoenix Of the thirteen species of Phoenix, four species are single trunk and the rest form suckering groups of stems. Some trunks, such as the Phoenix canariensis, are massively thick and tall, sometimes to over 60 feet of trunk. Other species such as Phoenix acualis are trunk less and look like leaves coming from one point in the ground.

Clumps of Phoenix reclinata can get quite large over time. It is important with Phoenix that you know what species you are growing and give them adequate room for their eventual size. If space is limited, consider Phoenix roebellenii, which is a much smaller species and seldom gets over 10 feet of trunk. Phoenix canariensis used as a commercial grouping Phoenix dactylifera used in large numbers in a shopping center Most Phoenix species tolerate heat quite well and therefore do well in hot, desert areas. It is not unusual to see large Phoenix canariensis in full sun in places such as Palm Springs, Las Vegas and Phoenix. Date Palm groves are found in inland, hot desert areas of California and this species thrives in the Middle East. Other species may need a bit of sun protection if you live in a desert area. Regarding cold tolerance, as a group Phoenix are reasonably cold hardy. Phoenix canariensis, sylvestris, dactylifera and theophrastii have been known to tolerate cold temperatures into the teens Fahrenheit. Although Phoenix would not be considered among the most cold hardy of palms, most species do quite well planted domestically in Southern California.

Most types of Phoenix would be considered to have a slow to medium rate of growth. From a small plant, it typically takes ten years or more to get a fruiting true Date Palm Tree. Removal and establishment of larger suckers from mature plants can speed up the time to fruiting. When one sees a Canary Island Palm with twenty or thirty feet of trunk, one can assume that plant to be several decades old. And, because large Canaries are quite popular as a garden specimen, they are often dug from one location and replanted in another location. Most species will transplant well, but a large root ball and expertise with moving is required. Typically cranes are used to move large specimens. Both of the photos above show Phoenix canariensis that have been dug and planted in an upscale shopping center, either as a group or single Popularity of the types of large sized Phoenix has changed over the years. Favorites seem to change with the wind. They are utilized because they are large, stately, and make a major architectural statement. In my thirty years as a nurseryman, originally the Canary Island palm was most sought after. Subsequently the Senegal Date Palm seemed to be the rage.

In more recent times, the true Date Palm has become popular, probably because it is a bit more affordable. The latter is the result of urban sprawl and conversion of existing Date groves into homes and communities. These grove specimens are dug and planted into landscape areas. Overall, however, of all the larger species, Phoenix canariensis still reigns as the king in popularity. Most Phoenix species tolerate some degree of drought. It is not unusual to see a specimen in a vacant lot where it is only living on rain water. It is true that domestic irrigation will lead to more rapid growth, but water restriction typically does not cause death of the tree. DIFFERENT SPECIES OF PHOENIX, THE DATE PALMS Phoenix canariensis, the Canary Island Palm: As mentioned above, Phoenix have a very diverse appearance from small to large. The most classical Phoenix species is Phoenix Canariensis, known as the Canary Island Date Palm. It is the largest of the Date Palm family and gets trunks up to 60 feet tall and sometimes as thick as 3 feet. Its trunk is slightly rough but not "knobby" like the Phoenix dactylifera.

The crown is full with many long pinnate leaves, sometimes to 15 feet or longer. The proximal leaflets on this and other species have modified to form sharp, long spines. These are dangerous and quite vicious. Viewed in cross-section, the Canary leaves are rather flat and not as plumose as a P. dactylifera or sylvestris, and are a dark green compared to the gray-green of the dactylifera. Fruits are small (1 cm) and yellow when mature. This species is native to the Canary Islands, a group of islands in the Atlantic Ocean southwest of Spain near the African continent. It is a favorite ornamental palm and planted worldwide. It needs room for growth and should not be planted too closely to a structure or home. Because of it's slow growth, larger specimens are often purchased for resale to other locations. A popular size for resale is ten feet of trunk so that the canopy is overhead. Smaller, bushy Canaries are quite unapproachable until they have trunked.

Phoenix canariensis at Balboa Park, San Diego Another Canary Palm at a home A unique planting of 3 Phoenix canariensis together A major problem with this species is a fungal disease called Fusarium Wilt. This is transmitted by pruning equipment, climbing spikes or saws. It causes a progressive death of the lower leaves, often on one side, progressing up the crown and eventually killing the tree. Because it is transmitted by pruning equipment (and arborists), it is not uncommon to see several trees all infected in the same location at the same time. Equipment introduced and passed the disease to each tree. To my knowledge there is no universally effective treatment for this disease and infected plants usually have to be sacrificed. This is devastating for owners and anyone with large Canary Palms should invest in their own pruning equipment that should only be used on their trees. One can imagine that "cleansing" chain saws is nearly impossible. Specimen (right) in decline, probably from Fusarium The Canary in the front is dead from Fusarium About twenty years ago and because of a pruning technique on the lower leaf bases, the term "Pineapple Palm" began emerging. Such pruning causes a bulge or expansion of the trunk immediately below the crown of leaves.

This is a man made appearance and disappears if the pruning is not redone at regular intervals. If one enjoys this appearance and wants to maintain it, consider purchasing pruning equipment and chainsaws for your tree. Some homeowners will even prune juvenile Canaries in such a manner. Be aware that now, in 2014, there is speculation that wind dispersion or insects may play a role in transferring this disease. This photo shows the technique of "pineapple pruning" on a large Canary Island Palm. This is another view of the same palm Here it has been done to a juvenile Canary Palm Phoenix canariensis is quite cold hardy, perhaps down to about 15 or 16 degrees Fahrenheit. It is not unusual to see specimen plants in cooler areas like Southern Europe or Northern California. The fruit of this species is edible by report, but because it is quite thin and sparse, it is not nearly as sought after as the fruit of the Date Palm, Phoenix dactylifera. A close up view of the crown of Phoenix Canariensis crown A close up picture of the trunk of Phoenix canariensis A juvenile P.

canariensis, too small to walk below Phoenix dactylifera, the True Date Palm From a historical and resource point of view, this is the most common and popular of the Date Palm family. This is because mature trees produce fruit which is high in sugar and eaten by millions of people. There is evidence that this fruit has been consumed for many thousands of years. The exact area of origin of this species is unknown, but felt to be in the Persian area or northern Africa. The medjool variety of Phoenix dactylifera is one of the more popular varieties because of its soft, supple fruit. Date growers will propagate a grove from what is selected as the finest cultivars of a given variety to optimize the quality of their fruit. Remember that one must have a female plant to produce the fruit and males must pollinate the blossoms of the females. One tree can produce up to 200 pounds of dates during a growing season. Date grower often get municipal laws to prevent the introduction of other species of Phoenix into their growing area so that hybridization with such species and deterioration of their date crop does not occur. This protects their crop of palm dates.

Multiple Date Palms in a row A close-up of the knobby trunk of Phoenix dactylifera Close-up of the petioles of the Date Palm; note yellow color Phoenix dactylifera are typically seen as a single trunk tree, but many specimens are suckering with multiple stems. The additional stems are often removed for easier access to the main trunk for picking fruit. The trunks are shorter than the Canary Palm and typically about 30 to 40 feet. Many times the trunks take on a "knobby" appearance from tissue from the old, removed leaves bases after pruning (see photo above). The crowns of leaves are smaller than a Canary and more of a gray-green or sometimes blue color. This blue color to the leaves is even more apparent in hot, dry climates. Leaves are armed with spines and fruit-bearing typically takes about 10 years. Mature female Phoenix dactylifera, loaded with fruit Date Palm showing suckering tendency This species is equally as cold hardy and drought tolerant as the Canary Palm, but does better than the Canary with dry, inland desert heat. Trees are also susceptible to Fusarium (above).

In more recent years, this species has gained in popularity because of the availability of dug trees from sold-off date groves (see photos above). Phoenix roebellenii, the Pygmy Date Palm The Pygmy Date palm has been popular for many years because of it's ease of growth and small stature. Its origins come from Asia and more specifically Southern China. Laos and Vietnam. Of note and in contrast to the species above, the Pygmy dates come from more humid areas and this species natively often grows along river beds. Another interesting fact is that natively this species is often a suckering species with thinner trunks and sparse crowns. Domestically grown, the plants are typically single trunk with fuller crowns. It is possible to find both single trunk and suckering varieties at specialty nurseries. But, the point should be made that commercial plants are often planted as "multiples". This means that several single trunk plants are put into one pot. This is opposed to the true, suckering plant seen in habitat. It is speculated that the suckering ability of this "species" was lost somewhere along the time during commercial production of the species.

Phoenix roebelenii, single, in a garden Phoenix roebelenii, a triple, in a garden area A single trunk specimen, fairly old, in the nursery Trunks of Phoenix roebellenii in domestic plantings are typically under ten feet and about 3 to 5 inches thick. This means that a very old specimen will not typically be above 12 feet in height. Multiple specimens will often show the "stair step" appearance with a dominant plant and shorter companions adjacent to the main trunk. With age, trunks have lots of fiber, matting and hair. This can be pruned clean to give a somewhat flaring, knobby trunk (see below). The crowns of leaves are typically full and soft appearing. Like other Phoenix species, leaves do have spines and this species should not be planted close to walkways and stairwells. In coastal areas plants demand full sun and "shading out" of a specimen can result in decline or death to the plant. Although not the easiest plant for indoor growing, it can be done if adequate direct light is given.

Two photos below of nursery plants show (at an early age) the difference between two individual specimens being planted in a container and the true suckering nature of some Pygmy Date Palms. To the untrained eye it might be difficult to distinguish, but suckers actual begin and emanate from he mother trunk. Two individual Pygmy Dates planted in one pot. This is not true suckering. This is a sucker off the main stem. Compare it to the plants in the photo to the left. Note the "knobby" trunk from cleaning the trunk on this Pigmy Date Palm. Most Phoenix species prefer full sun. Phoenix roebellenii (in most areas) is no exception to this rule. Plants placed in shaded out areas under-perform. Ideally, it should be given at least half day sun. Thus, planting them on the north side of a home in shade may result in poor performance or demise. Some sun protection may be needed in hot desert areas. Plants are a bit drought tolerant, but not as much as many of the other species of Phoenix. Cold tolerance is into the low twenties F. As this is less than many other Phoenix species, one can see this species is not the optimal choice for colder areas.

Unfortunately, home improvement centers push them to customers in colder areas who probably should try something else. Pygmy Date palms can be dug and moved, but don't be fooled by their smaller size. If you do plan on digging one, get a very large root ball. All too many people have lost their plant because they thought a "little plant" only needs a little root ball. Phoenix rupicola, the Cliff Date Palm This is a solitary trunking species that comes from India and adjacent areas at rather high elevations and often on hillsides or slopes of mountains, thus giving it the name of "Cliff Date Palm". It resemble the Canary Island Palm but is smaller, has a thinner trunk and a much softer and more graceful appearing crown. Trunks are typically about a foot in diameter and only get to about 25 feet. The leaves are quite flat and in a single plane and about ten feet in length. The spines are less vicious than the Canary and the leaf color is more of an emerald green. Because of the droopy characteristic of the leaf, it is often felt to be more exotic appearing than the Canary Palm.

This species might be an ideal choice for someone who likes the statement of a Canary Island Palm but doesn't have the room for it. This species is definitely a beautiful palm, but it doesn't have the cold hardiness of the canariensis or dactylifera. Estimates are that it will tolerate temperatures in the mid-twenties F, but not low 20's. It is argued that this is the most beautiful of the solitary Date Palms with its graceful and soft crown. It prefers full sun in coastal areas and, because of its size, is not an ideal palm for interior growing. Phoenix rupicola at Balboa Park, San Diego Phoenix rupicola crown of leave Another example of the Cliff Date Palm Phoenix reclinata, the Senegal Date Palm This suckering species has multiple stems and is a medium to sometimes large palm native to central and southern Africa, Madagascar and the Comoro Islands. I mention above that it is "sometimes large" because heights of this species are variable but have been known to reach 50 feet. The term "reclinata" is felt to refer to the "reclining" nature of the outer stems as they move away from the clump and then upwards.

Stems are 4 to 8 inches in thickness and covered with fibers and hairs. This species freely suckers so pruning and elimination of trunks is often necessary to give it a graceful appearance. Left unchecked, clumps can become overwhelming with as many as fifty trunks. Because of this, this species would be considered a high maintenance species, especially during its earlier years. Classical plants from habitat often have a very flat (one plane) leaf, but commercial cultivars are often plumose and "spiky". Mature specimens demonstrate one of the nicest characteristics of the species: taller trunks gracefully leaning away from the midline and silhouetting themselves against the blue of the sky. These trunks therefore may show a gentle curve as they head upwards, somewhat reminiscent of a Coconut. They can be quite beautiful if stems are artistically eliminated to give variable heights to the trunks and crowns and can be very dramatic in an open lawn setting or against a tall building. This species wants to be planted in full sun. It should be given ample room and can tolerate temperatures into the low twenties F. Phoenix reclinata, an old specimen in San Diego Another smaller specimen in Balboa Park, San Diego A nice P.

reclinata in a domestic planting Phoenix sylvestris, the Toddy Palm or Wild Date Palm This species is from southern Pakistan and India. It resembles a Phoenix canariensis but the trunk is not as thick. It carries many leaves and the overall crown shape is somewhat smaller and more "rounded" than the Phoenix canariensis. It is known as the "Silver Date Palm", the "Toddy Palm", and the "Wild Date Palm". The trunk does get to about 40 to 50 feet and often will show old retained leaf bases giving it a patterned appearance of the trunk. Different from the Canary Island Palm, this species has multiple ranks of leaflets on the leaves (not flat in profile) and may appear somewhat "fluffy". For some people, Phoenix sylvestris may seem to be an alternative to the Canary Island Palm. But, it is not as cold hardy as the Canary. It also has a different color to the leaves and a thinner trunk. I'd estimate this species will tolerate temperatures into the low 20's F, perhaps upper teens. It does tolerate hot conditions and is a good grower.

Like other species, it is extremely spiny and care must be used when pruning this species. Phoenix sylvestris along a street planting A specimen in a botanical garden Phoenix theophrastii, Cretan Date Palm Phoenix theophrastii is a Phoenix species with a very limited area of distribution, native to Southern Greece and the Island of Crete and perhaps some surrounding areas. It is a suckering species that gets to over 40 feet height. It has rather thin trunks and is very spiny with prickly leaves. Some feel it might be related to the true Date Palm. It's crowns of leaves are smaller than the P. dactylifera and it suckers more than the Date Palm. Different than P. dactylifera, this species fruit is not sweet or particularly edible. It does have a somewhat gray color to the crown. Specimens look very thick and impenetrable when smaller but with time will show some taller stems. Phoenix theophrastii, showing how prickly and thick a plant is at this stage Phoenix acaulis, the Dwarf Date Palm Phoenix acualis is a unique species in that it is basically "trunkless".

It is for this reason that it is known as the Dwarf Date Palm. It is native to northern India and Nepal. It is a small palm and single trunked. However, like other Phoenix, it is spiny. Trunks apparently are subterranean and roots seek out water as this species is often found in very arid areas. Fruits and blossoms are often seen at ground level. Overall the plant is a rather small plant with gray-green leaves. Because of its small size, it may do well among succulents or in a xerophytic garden. Phoenix loureiri and other rare species Phoenix loureiri is from India and other Asian countries and is typically a single trunk plant but can be seen to sucker. It is a smaller species with trunks seldom over 15 feet and about a foot in diameter. They are an alternative to the much larger Phoenix canariensis and have somewhat plumose leaves. The leaf color is green to gray-green. There is felt to be a variety of P. loureiri known as "humilus". It can tolerate full sun or partial sun and has some degree of cold hardiness.

Phoenix loureiri in a botanical garden There are several other unusual species of Phoenix, but it is beyond the purpose of this article to cover these species. Let it be said that they are all spiny, single or trunking, and many have ornamental value. Phoenix Hybrids It is quite common for nurserymen and plant enthusiasts to make intrageneric hybrids (crosses within a genus). We have seen a lot of such crosses in orchids, bromeliads and various types of palms. But, with Phoenix, hybridization occurs without man's effort and only requires mere proximity of different species. In general, Phoenix set seeds quite easily. In habitat, this ability is probably prosurvival. But, in habitat, there are not typically multiple different species of Phoenix side by side or in the same area. So, in the wild, the species procreates, stays pure and lives on. In a domestic setting this is usually not the case. One must assume that seeds from any given plant in a domestic area are hybrids unless ones has pollinated the male blossom with pure pollen or there are no other species around. This is true regardless of the species of female Phoenix.

As nurserymen will often opt for cheaper domestically provided seeds of "impure" heritage, there is a multitude of "different" looking " Phoenix being sold and grown throughout the world. I am not implying that this is a bad thing. It just makes it a guessing game as to the identify or parentage of any given domestic Phoenix that one might see. And, the more one looks, the more one sees evidence for this natural process of hybridization. One might see a "Canary" with an remarkably thin trunk. Or, a Pygmy Date with a husky trunk and very long, stiff leaves. In fact, I've seen almost every combination of Phoenix characteristics imaginable.. The important thing is to just recognize this fact and rest assured that calling a different looking plant a "hybrid" may in fact be the correct answer. Below is an example of a plant that appears to be a Phoenix canariensis. The crown appears to be a normal Canary Island Date Palm. But, the trunk is quite narrow, about 12 inches thick. This would be very unusual for a Canary. Also, it is quite smooth compared to a typical Canary. Could it be a P. rupicola? My guess is that it's a hybrid.

I mentioned previously how Phoenix reclinata in its natural form has a very flat leaf, single plane more or less. The picture below shows an example of this natural form of reclinata. Compare the picture above to the more typically seen plumose (multi-ranked leaflets) "Phoenix reclinata" below. Note how the leaflets come off the petiole at multiple angles. This is the result of hybridization. Below is an example of the Phoenix roebelenii from domestically produced seeds. Note there is a sucker emanating from the base of the mother trunk. This is also the result of hybridization in the domestic environment. The more one looks, the more unusual combinations of morphology one will find. Phoenix hybridize like crazy. . COMMONLY ASKED QUESTIONS ABOUT THE DATE PALMS Will my Date Palm make edible dates? Basically, one must have the true Phoenix dactylifera to get dates, and one must have a female. And, there must be a male in the area of your female. There are various varieties of the Date Palm with differences in the quality of the fruit. Can I cut suckers off my Date Palm to make it a single trunk specimen?

The answer is yes, and this is commonly done in commercial groves of Date Palms. This is often done just above the soil line. How long does it take to get edible dates? A Phoenix dactylifera has to be a female and of fruiting size. Typically such a plant has trunk well overhead. This will take a minimum of ten years, usually longer. How do I get a large Canary Island Palm for my yard? If resources permit it, most buy an existing large P. canariensis from someone who transplants large specimen palms. This means the broker buys one from someone, already large, and digs it up and moves it to your yard. Because this requires a lot of effort, time, crane expenses, and risk, purchasing such a plant is usually expensive. One can, of course, buy a containerized smaller tree and be patient. What is the best size to buy if I get a large Canary Island Palm? This varies, individual to individual, but most people want one that is overhead. For practical reasons, this keeps the sharp spines well above you head if you walk below it. For this reason, plants with a trunk of about ten feet are the most popular.

Realize that, in time, you ten-footer will get much taller. I've seen old specimens with more than forty feet of trunk. If resources are limited, plant a smaller containerized plant and be patient. In time, it too will get overhead and majestic appearing. Should I use my own pruning equipment for removing old leaves on my Phoenix? The answer is yes! Fusarium is a disease that Phoenix are very susceptible to. It is typically transmitted by pruning equipment, shears, shoe spikes, etc. If a trimmer uses equipment that is reserved only for your plants, it won't transmit the disease. This includes chain saws. I feel it is almost impossible to totally sterilize a chain saw, no matter what anyone tells you. It is all too common to hear of a dying Canary that was pruned six month ago. Although Fusarium infections are most common with Canary Island Palms, there are reports of its transmission to several other Phoenix species. It is definitely advisable to have a professional pruner use your equipment when he works on your plants. If this is not possible, demand that the tree trimmer very thoroughly sterilizes his equipment. What can I do to avoid all the dropping fruit from my Date Palm (or other Phoenix).

There is no chemical or drug that prevents fruiting on your Phoenix. If you get a male, there will be no fruit but you will still have falling blossoms. The best thing to do is cut off the blossoms when they are young. It does not hurt the tree and lets you avoid fruit that will form later. Can I sell my large Canary Island Date Palm? The answer is yes, if it is accessible and not too large. It must be disease free and a good looking tree. Very large palms have a very limited purchasing market. Even if yours is the perfect size, realize that you won't get rich selling it and the usual price paid for a ten foot Canary is under $1000. More profit will be made by the buying professional, but it's nearly impossible to avoid this. If interested, read our article "I want to sell my large palm tree" at this site. A spine punctured through my skin and is painful. What should I do? Such an injury always requires a medical evaluation because the spine can break off under the skin and lead to various complications and infection. If you suffer such an injury, immediate seek medical attention. Always use eye protection if working around a Phoenix Palm.

My Canary Island Palm has Fusarium. What can I do? Unfortunately, this is usually a fatal infection and your plant will probably die. You could hire a plant pathologist to advise you, but don't be overly optimistic that the plant will survive. (see pruning precautions above). Make sure you don't transfer the infection to other adjacent Phoenix plants. Can I dig up and move my Pygmy Date Palm? Even though large Phoenix are commonly dug and survive, the Phoenix roebellenii is a bit of a challenge. Because of its small size, people think all that is needed is a small root ball. This is not true and many smaller Pygmies that are dug die slowly over the next month or two. To succeed you must obtain a very large root ball and be careful to avoid tearing the roots. Will rooting into the ground on my containerized Phoenix palm hurt the plant? Phoenix palms in containers are particularly vulnerable to shock when they have rooted into the ground and then are moved, tearing the roots that have worked their way into the soil. Within a few weeks, one typically sees the new spear and leaves that are opening turn brown. They look dry, brown and dead. It always affects the newest leaves the most.

If one is transplanting a Phoenix or just purchased one, always look at the new spear and the newest leaves for signs of shock or injury. And, if the plant recovers, you will see the new spear turn green and healthy looking. Can I plant my Pygmy Date Palm right next to the walkway? The answer to this question is fairly obvious: the answer is no for health and safety reasons. Eye punctures by spines are something one wants to avoid. My Phoenix Palm doesn't look like any of the photos. What do I have? As mentioned above, Phoenix are very promiscuous and hybridize quite easily. For this reason, one frequently sees palms that are "in-betweeners" and don't appear to be a definite species. In an area like Tampa or Miami, it is sometimes more common to see hybrids than it is to see pure species. This is why plants grown from wild collected seeds (little chance of hybridization) are sought out by specialty palm nurserymen. Can I grow my Phoenix Palm inside the house? Phoenix species are a poor choice for interior growing.

Unfortunately, because common species such as the Pygmy Date Palm are so readily available in the home improvement centers, people think they must grow well inside the house. The fact is they are a bit of a problem as an interior plant. They need lots of sun and good air movement. There are some successes indoors, but there are much better species to grow as houseplants. If one does chose to grow one inside, be very careful about injuries from the spines. I want dates. Is there any way to tell if a small plant is a female or a male? The answer is no. Only if you get a removed sucker from a known female parent, can you predict the sex I have one female Date Palm. Will I get good fruit? To get pure fruit you also need the female flowers to be pollinated by a male Phoenix dactylifera. If you only have one female plant, any fruit formed would most likely receive pollen from some other type of Phoenix and give hybrid fruit which is undoubtedly inferior in quality. This is why the date grove localities try to prevent homeowners from introducing other species of Phoenix. . Summary I hope that the reader now understands that there are many species of Phoenix. But, there is only one true Date Palm.

And, to get edible dates, you must obtain a female Phoenix dactylifera, the true Date Palm. And, you must have male plants for pollination in your locality. Some species of Phoenix are suckering (multiple stems), others are single trunk. Some are short while others tower overhead. All have spines. Suckering species may need pruning of offsets to create the most beautiful mature specimen. In general, Phoenix do not make great house plants, but can be grown with some success indoors if given enough light. All Phoenix hybridize easily.. At our nursery we offer all the species of Phoenix for sale in containers. We also sell over 800 other types of palms and countless species of cycads and other tropical plants. We are not company that digs and cranes large specimens, but may be able to assist you in locating fine specimen trees or a reputable transplanting company. Please contact us if you are interested. The rare Phoenix caespitosa, Saudi Arabia, by Tom McCoy Citrus | plant genus | Britannica.com plant genus cork tree Citrus, genus of plants belonging to the rue family ( Rutaceae ), and yielding pulpy fruits covered with fairly thick skins.

Economically important plants in this group include the lemon (C. ×limon), lime (C. ×aurantiifolia), sweet orange (C. ×sinensis), sour orange (C. ×aurantium), tangerine (C. reticulata), grapefruit (C. ×paradisi), citron (C. medica), and shaddock (C. maxima). Pink-fleshed grapefruits, or pomelos (Citrus ×paradisi). ValentynVolkov—iStock/Thinkstock Lemons hanging from a tree. Ray Juno/Corbis Citrus plants are typically evergreen trees or shrubs with glossy oval-shaped leaves ; many species have thorns. The flowers are usually white with five petals and are very fragrant. The fruits are a type of modified berry known as a hesperidium, and the flesh is divided into segments packed with tiny juice-filled vesicles. The peel, or rind, of the fruits is leathery and studded with oil glands. The blossom and fruit of the orange (Citrus).

Ellen Levy Finch Rutaceae the rue family of flowering plants (order Sapindales), composed of 160 genera and about 2,070 species. Rutaceae includes woody shrubs and trees (and a few herbaceous perennials) and is distributed throughout the world, especially in warm temperate and tropical regions. The largest numbers are found... lemon small tree or spreading bush of the rue family (Rutaceae) and its edible fruit. Lemon juice is a characteristic ingredient in many pastries and desserts, such as tarts and the traditional American lemon meringue pie. The distinctive astringent flavour of the fruit, either fresh or preserved, is... lime any of several species and hybrids of trees and shrubs in the rue family (Rutaceae), widely grown in tropical and subtropical areas for their edible acidic fruits. The Persian lime (Citrus × latifolia) is one of the most common commercial varieties, though the smaller key lime, or Mexican...

12 References found in Britannica Articles Assorted References disease treatment (in plant disease: Eradication ) (in plant disease: Biological control ) frost protection (in frost ) citrus fruit - Children's Encyclopedia (Ages 8-11) Oranges, grapefruit, lemons, limes, shaddocks, and citrons are all types of citrus fruit. Citrus fruits have a juicy pulp inside a leathery skin. They grow on trees, bushes, or shrubs. Citrus plants belong to the rue family of flowering plants. This family also includes kumquats. citrus fruit - Student Encyclopedia (Ages 11 and up) Members of the rue family (Rutaceae), citrus trees make up the genus Citrus. All citrus fruits are considered by botanists to be a special type of berry called a hesperidium. The fruit has a leathery peel and a fleshy, edible interior. The interior flesh, or pulp, is divided into eight or more sections that contain many tiny juice sacs and the seeds. Many of the more popular varieties of citrus fruits are cultivated to be seedless. Article History Corrections? Updates? Help us improve this article!

Contact our editors with your feedback. MEDIA FOR: You have successfully emailed this. Error when sending the email. Try again later. Edit Mode Submit Tips For Editing We welcome suggested improvements to any of our articles. You can make it easier for us to review and, hopefully, publish your contribution by keeping a few points in mind. Encyclopædia Britannica articles are written in a neutral objective tone for a general audience. You may find it helpful to search within the site to see how similar or related subjects are covered. Any text you add should be original, not copied from other sources. At the bottom of the article, feel free to list any sources that support your changes, so that we can fully understand their context. (Internet URLs are the best.) Your contribution may be further edited by our staff, and its publication is subject to our final approval. Unfortunately, our editorial approach may not be able to accommodate all contributions. Submit Thank You for Your Contribution! Our editors will review what you've submitted, and if it meets our criteria, we'll add it to the article. Please note that our editors may make some formatting changes or correct spelling or grammatical errors, and may also contact you if any clarifications are needed.

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Question: What is the fruit of the Phoenix genus of plants?
Answer: Dates