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FACT SHEET: KUDZU

Kudzu 

Pueraria montana var. lobata (Willd.) Maesen & S. Almeida 

Pea family (Fabaceae) 

NATIVE RANGE 

Asia 

DESCRIPTION 

Kudzu ia a climbing, semi-woody, perennial vine in the pea family. Deciduous 

leaves are alternate and compound, with three broad leaflets up to 4 inches 

across. Leaflets may be entire or deeply 2-3 lobed with hairy margins. 

Individual flowers, about 1⁄2 inch long, are purple, highly fragrant and borne in long hanging clusters. Flowering occurs in 

late summer and is soon followed by production of brown, hairy, flattened, seed pods, each of which contains three to ten 

hard seeds. 

ECOLOGICAL THREAT 

Kudzu kills or degrades other plants by smothering them under a solid blanket of leaves, by girdling woody stems and tree 

trunks, and by breaking branches or uprooting entire trees and shrubs through the sheer force of its weight. Once 

established, Kudzu plants grow rapidly, extending as much as 60 feet per season at a rate of about one foot per day. This 

vigorous vine may extend 32-100 feet in length, with stems 1⁄2-4 inches in diameter. Kudzu roots are fleshy, with massive 

tap roots 7 inches or more in diameter, 6 feet or more in length, and weighing as much as 400 pounds. As many as thirty 

vines may grow from a single root crown. 

DISTRIBUTION IN THE UNITED STATES 

Kudzu is common throughout most of the southeastern U.S. and has been 

found as far north as Pennsylvania. 

HABITAT IN THE UNITED STATES 

Kudzu grows well under a wide range of conditions and in most soil types. 

Preferred habitats are forest edges, abandoned fields, roadsides, and 

disturbed areas, where sunlight is abundant. Kudzu grows best where winters 

are mild, summer temperatures are above 80 degrees Farenheit, and annual 

rainfall is 40 inches or more. 

BIOLOGY & SPREAD 

The spread of kudzu in the U.S. is currently limited to vegetative expansion by runners and rhizomes and by vines that 

root at the nodes to form new plants. Kudzu also spreads somewhat through seeds, which are contained in pods, and 

which mature in the fall. However, only one or two viable seeds are produced per cluster of pods and these hard-coated 

seeds may not germinate for several years. 

 BACKGROUND 

Kudzu was introduced into the U.S. in 1876 at the Philadelphia Centennial 

Exposition, where it was promoted as a forage crop and an ornamental plant. 

From 1935 to the mid-1950s, farmers in the south were encouraged to plant 

kudzu to reduce soil erosion, and Franklin D. Roosevelt's Civilian Conservation 

Corps planted it widely for many years. Kudzu was recognized as a pest weed 

by the U.S. Department of Agriculture and, in 1953, was removed from its list 

of permissible cover plants. 

MANAGEMENT OPTIONS 

For successful long term control of kudzu, the extensive root system must be 
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Plant Conservation Alliance®s Alien Plant Working Group 

Xeeds HoneXild: Alien Plant Invaders of Natural Areas 

http://www.nps.gov/plants/alien/

destroyed. Any remaining root crowns can lead to reinfestation of an area. Mechanical methods involve cutting vines just 

above ground level and destroying all cut material. Close mowing every month for two growing seasons or repeated 

cultivation may be effective. Cut kudzu can be fed to livestock, burned or enclosed in plastic bags and sent to a landfill. If 

conducted in the spring, cutting must be repeated as regrowth appears to exhaust the plant's stored carbohydrate 

reserves. Late season cutting should be followed up with immediate application of a systemic herbicide (e.g., glyphosate) 

to cut stems, to encourage transport of the herbicide into the root system. Repeated applications of several soil-active 

herbicides have been used effectively on large infestations in forestry situations. 

Biological 

Efforts are being organized by the U.S. Forest Service to begin a search for biological control agents for kudzu. 

USE PESTICIDES WISELY: Always read the entire pesticide label carefully, follow all mixing and application instructions and wear all 

recommended personal protective gear and clothing. Contact your state department of agriculture for any additional pesticide use 

requirements, restrictions or recommendations. 

NOTICE: mention of pesticide products on this page does not constitute endorsement of any material.

CONTACTS 

For more information on kudzu management, please contact: 

• Robert J. Richardson, Aquatic and Noncropland Weed Management, Crop Science Department, Box 7620, North 

Carolina State University, Raleigh, NC 27695-7620, (919) 515-5653, Rob_Richardson at ncsu.edu 

• James H. Miller, USDA Forest Service, DeVall Drive, Auburn University, AL 36849, Miller at forestry.Auburn.edu 

SUGGESTED ALTERNATIVE PLANTS 

Native vines such as trumpet creeper (Campsis radicans), pipevine (Aristolochia macrophylla), passionflower (Passiflora 

lutea), trumpet honeysuckle (Lonicera sempervirens), and native bittersweet (Celastrus scandens) have attractive flowers 

and fruits, provide food for wildlife and make excellent substitutes for kudzu. These plants should be used in landscaping 

and for land restoration where they are known to occur as natives. 

OTHER LINKS 

• http://www.invasive.org/search/action.cfm?q=Pueraria%20montana 

• http://nbii-nin.ciesin.columbia.edu/ipane/icat/browse.do?specieId=23 

• http://www.hear.org/starr/hiplants/images/thumbnails/html/pueraria_montana_var_lobata.htm

AUTHORS 

Carole Bergmann, Montgomery County Department of Park and Planning, Silver Spring, MD 

Jil M. Swearingen, National Park Service, Washington, DC 

PHOTOGRAPHS 

Jil M. Swearingen, National Park Service, Washington, DC 

REFERENCES 

McKnight, B.N., ed. 1993. Biological Pollution. Indiana Academy of Sciences, Indianapolis, IN. 261 pp. 

Miller, J.H. and B. Edwards. 1982. Kudzu: Where did it come from? And how can we stop it? Southern Journal of Applied 

Forestry. Pp. 165-169. 

Randall, J.M. and J. Marinelli. 1996. Invasive Plants:Weeds of the Global Garden. Brooklyn Botanic Garden Club, Inc. 

Handbook No. 149. 111 pp. 

Swearingen, J. 2009. WeedUS Database of Plants Invading Natural Areas in the United States: Kudzu (Pueraria montana 

var. lobata). http://www.invasive.org/weedus/subject.html?sub=2425. 

USDA, NRCS. 2009. The PLANTS Database (http://plants.usda.gov). National Plant Data Center, Baton Rouge, LA 

70874-4490 USA. 
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Plant Conservation Alliance®s Alien Plant Working Group 

Xeeds HoneXild: Alien Plant Invaders of Natural Areas 

http://www.nps.gov/plants/alien/

Virginia Native Plant Society. 1995. Invasive alien plant species of Virginia: kudzu [Pueraria lobata (Willd.) Ohwi]. Virginia 

Department of Conservation and Recreation, Richmond, Virginia.