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| ## bluedicks {#bluedicks .Title-Header}                               |
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| *Dichelostemma capitatum* (Benth.) Wood ssp. *pauciflorum* (Torr.) G. |
| Keator                                                                |
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| Plant Symbol = DICAP                                                  |
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##### *Contributed By: USDA NRCS National Plant Data Center & University of California-Davis Arboretum*

# Alternative Names![](media/image2.jpeg){width="2.783333333333333in" height="1.8555555555555556in"}

Few-flowered bluedicks, brodiaea, wild hyacinth. A related subspecies is
*Dichelostemma* *capitatum* ssp. *capitatum*.

# Uses

*Ethnobotanic*: Large quantities of corms were gathered with digging
sticks in over half of California, parts of the Great Basin and
Southwest. These corms formed an important starch source in the diet of
native people. California Indians dug and continue to dig the corms
before flowering, during flowering, or after seeding depending upon the
tribe and individual family. Traditional gathering sites were visited
annually, over long periods of time and there are references to
gathering tracts of different kinds of corms and bulbs specifically
owned and maintained by particular families. Today different kinds of
brodiaeas have gained popularity as cut-flower crops.

*Wildlife*: Corms are eaten by both small and large mammals included
black bears, mule deer, exotic wild pigs, and pocket gophers. The corms
of blue dicks are highly desirable to vertebrates, and it appears that
some corms are sacrificed to corm-eating animals as a price for the
dispersal of others. The mammals detach the tiny corms as they go,
aerating soil, preparing the seedbed, thinning the plant population, and
leaving cormlets behind. Once

dislodged, cormlets may take less time to reach flowering size.

# Status

# Please consult the Plants Web site and your State Department of Natural Resources for this plant's current status, such as, state noxious status and wetland indicator values.

# Description 

*General:* Lily Family (Liliaceae). Blue dicks is an herbaceous
perennial. Major identifying features of blue dicks include a dense
cluster of purple-blue or occasional white flowers with six fertile
stamens, a twisted and fleshy stem, two basal leaves, a set of
membranous, petal-like stamen appendages around the anthers, and angular
black seeds. It reproduces from seed and vegetative means in the form of
corms. The cormlets are attached to the parent corm by stolons or
sessile, produced in the axils of the old leaf bases on the mature corm.

Blue dicks may reach two feet in height, thrives in open disturbed
environments, and it frequently occurs on inventory lists as a common
post-fire successional species in chaparral studies

# Distribution

Blue dicks is found from Oregon, throughout most of California including
the southern halfway of the Baja California peninsula, southeast into
New Mexico, Arizona, and Sonora, Mexico. For current distribution,
please consult the Plant profile page for this species on the PLANTS Web
site.

# Establishment

*Adaptation*: Blue dicks occurs from sea level up to 2,100 meters. It
inhabits a wide variety of plant communities including vernal pools,
coastal strand, mixed evergreen forest, chaparral, valley grassland,
desert scrub, coniferous forests, oak woodlands, montane scree, and on
the fringe of coastal salt marsh and redwood forest.

It appears that it does not colonize after fire by seed, but rather is a
permanent resident all along, occurring as inconspicuous corms in the
soil throughout mature chaparral, often not flowering until an
appropriate disturbance. With fire, plants are released from unfavorable
shaded environments with brush competition, and vigorously flower in
open environments with increased soil nutrients.

If possible, obtain the seed and corms from local sources near where
they will be planted, to maintain genetic diversity of blue dicks and
for the best adaptation to local conditions. Some plant nurseries may
label their corms and seeds according to geographic source.

*Propagation by seed*: Seeds sown in the fall usually readily germinate
and do not need special treatment. If sown at other times of the year
the seeds may need one month\'s stratification. If planting seeds, they
will take several years to reach flowering size. Scatter seeds and rake
them lightly into the soil in full or partial sunlight. If planting
seeds in pots\--then place them in reduced sunlight on the east or north
side of a building or under a deciduous tree. Plant the seeds at a
depth, which equals the width of the seeds. They should be planted in a
well-drained soil. Water the seeds after planting and don\'t let the
soil dry out completely. Water them again when the surface is dry to the
touch. Water the seeds gently so as not to exhume the seed. If using a
watering can, diffuse the water flow with a sprinkler fan or head.
Protect the seeds from animals and cold, dry winds, and from weed
competition. The seedlings should be watered through the spring. At the
beginning of hot weather, the leaves will start to yellow. At this time,
cease watering. If the seeds are in pots, then move them in summer to a
darker area, such as a carport or garage and keep a screen on them to
keep out foraging animals. When the weather cools down once again, move
the pots back outside and go through a full rain or watering cycle once
again. After 24 months, the corms can be planted in full sun or filtered
shade in October or November. Plant them about six inches apart or
scatter the corms and plant them where they fall to give them a look of
a \"natural\" distribution. After one bloom, the plants should be well
established so that they don\'t need to be weeded or watered unless it
is a dry winter. If it is a dry winter, then water every three weeks.

Corms are the easiest to start. Plant bigger corms 3-4 inches deep and
smaller corms 1-2 inches deep in well-drained soil in full sun in the
autumn, and the plants can tolerate afternoon sun. Space the corms
one-inch apart. If pocket gophers are a problem, you may want to dig a
hole and line it with chicken wire mesh, before planting corms. (Plastic
mesh won\'t stop gophers.) Water the plants (wet, but not soggy) and
then wait for the winter rains. The plant is common in climates that
have rain in winter and spring, and a summer dry season. Therefore,
simulate these conditions in the garden. The plant is intolerant of
frequent summer water and should not be planted near lawns or plants
that require a lot of moisture during the summer. Weed around the plants
regularly.

# Management

There are five major types of indigenous management activities conducted
in California that were designed to ensure future corm production at
traditional gathering sites: 1) conscious breaking off cormlets from the
harvested parent corms and replanting them; 2) sparing whole plants; 3)
harvesting the corms after plants have gone to seed and dumping the
seeds in the hole; 4) burning areas; and 5) irrigation. Periodic digging
and thinning of the corms, and popping off the cormlets, and replanting
them may enhance blue dicks numbers and densities. Digging corms may in
fact be a form of tillage, which will increase the size of the gathering
tract, aerate the soil, lower weed competition, and prepare the seedbed
to increase seed germination rates. If blue dicks populations require
periodic disturbance to maintain and increase their populations, then
indigenous harvesting regimes, if reenacted, may help maintain
populations. At the very least, populations that become overcrowded and
show reduced vigor should be divided and separated.

Traditionally, various tribes in California have burned areas of blue
dicks to reduce plant competition, facilitate gathering, recycle
nutrients, and increase the size and number of corms. Today grasslands
that have been burned may exhibit thousands of blue dicks plants where
none appeared to occur before. Corms and bulbs may sit for a decade or
more and wait for fire or other favorable environmental conditions
before breaking ground. Suppression of fire may cause increased shade
and plant competition and decrease population numbers of blue dicks.

# 

# Cultivars, Improved and Selected Materials (and area of origin)

DICAP is somewhat available from native plant nurseries within the
species range. Contact your local Natural Resources Conservation Service
(formerly Soil Conservation Service) office for more information. Look
in the phone book under "United States Government." The Natural
Resources Conservation Service will be listed under the subheading
"Department of Agriculture."

# References

Anderson, M.K. 1997. *From tillage to table: the indigenous cultivation
of geophytes for food in California.* Journal of Ethnobiology
17(2):149-169.

Anderson, M.K. & D.L. Rowney 1998. *California geophytes: their ecology,
ethnobotany, and conservation*. Fremontia 26(1):12-18.

Bean L.J. & K.S. Saubel 1972. *Temalpakh: Cahuilla Indian knowledge and
usage of plants.* Malki Museum Press, Morongo Indian Reservation,
Banning, California.

Chestnut, V.K. 1902. *Plants used by the Indians of Mendocino County,
California*. Contributions from the United States National Herbarium,
Government Printing Office 1900-1902. Vol. 7:295-422. Reprinted in 1974
by the Mendocino County Historical Society Inc., Fort Bragg, California.

Fowler, C.S. 1986. *Subsistence*. Pages 64-97, IN W.L. D\'Azevedo,
editor. *Handbook of North American Indians. Vol. 11: Great Basin*.
Smithsonian Institution, Washington, D.C.

Heffner, K. 1984. *Following the smoke: contemporary plant procurement
by the Indians of Northwest California*. Unpublished report, USDA, Six
Rivers National Forest, Eureka, California.

Keator, G. 1989. *The brodiaeas*. The Four Seasons 8(3):4-11.

Keator, G. 1992. *Blue dicks brodiaea (Dichelostemma capitatum): A
common but problematical species.* The Four Seasons 9(2):31-42.

Keator, G. 1993. *Dichelostemma*. Pages 1190-1192, IN J.C. Hickman,
editor. *The Jepson Manual: Higher Plants of California.* University of
California Press, Berkeley, California.

Lawton, H.W., P.J. Wilke, M. DeDecker, & W.M. Mason 1993. *Agriculture
among the Paiute of Owens Valley.* Pages 329-378, IN T.C. Blackburn and
K. Anderson, editors. *Before the wilderness*: *Environmental management
by Native Californians*. Ballena Press, Menlo Park, California.

Mayes, V.O. & B.B. Lacy 1989. *Nanisé: A Navajo herbal.* Navajo
Community College Press, Tsaile, Arizona.

Niehaus, T. 1971. *A biosystematic study of the genus Brodiaea
(Amaryllidaceae)*. University of California Publications in Botany 60,
Berkeley, California.

Peri, D.W. 1985. *Pomoan plant resource management.* Ridge Review 4(4).
Mendocino, California.

# Prepared By & Species Coordinators

*M. Kat Anderson*

USDA, NRCS, National Plant Data Center

c/o Plant Science Department, University of California, Davis,
California

*Warren Roberts*

Davis Arboretum, University of California

Davis, California

###### Edited 05dec00 jsp; 01may03 ahv; 05jun06 jsp

For more information about this and other plants, please contact your
local NRCS field office or Conservation District, and visit the PLANTS
Web site\<[http://plants.usda.gov](http://plants.usda.gov/)\> or the
Plant Materials Program Web site
\<[http://Plant-Materials.nrcs.usda.gov](http://Plant-Materials.nrcs.usda.gov/)\>

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