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Chinese Wisteria – Invasive Plant Species

Wisteria sinensis

USDA Forest Service, Southern Region, National Forests in Florida, September 2000, Protection Report R8-PR 47.

Environmental Impact

  • Is a non-native, exotic plant without natural insects or disease to keep its growth in check
  • Impairs, overtakes, and outcompetes native vegetation by strangling and dense shading
  • Expansion by numerous above-ground stems that develop roots and shoots
  • Seeds may be carried downstream for long distances
  • Tolerates a wide variety of soil and moisture regimes
  • Negatively impacts wildlife dependent on native vegetation for forage, nesting, and cover
  • Interferes with recreational activities by threatening biodiversity and ecosystem stability on natural areas
  • Increases taxes or fees to offset costs associated with invasive plant management on public lands

Identification

  • Woody, deciduous, twining vine climbing 65 feet
  • Stems up to 15 inches in diameter in older plants
  • Alternate, odd-pinnately compound leaves, commonly with 9-11 leaflets
  • Blue-purple flowers hanging in long clusters before leaf expansion in early spring
  • Fruit a velvety, elongated pod

If you are still in doubt, county extension agents are able to assist with the identification of plants.

Control Methods

  • Repeated (early in the growing season, and every few weeks until autumn) mechanical stem cuttings, close to the root collar, to exhaust root stores
  • Foliar application of 1% triclopyr ester or a 1% glyphosate solution*
  • Cut stem treatment with 50% triclopyr amine (apply within 5 minutes of cutting)*
  • Basal bark treatment with 15%-30% triclopyr ester*

*Perform herbicide applications before fruit onset to avoid another generation of plants.

Triclopyr products, such as Brush-B-Gon®, and glyphosate products, such as RoundUp® and Rodeo® (labled for aquatic areas), are available in local garden and hardware stores. Always use an herbicide according to the entire label. Remember: The label is the law!

Caution

Pesticides used improperly can be injurious to humans, animals, and plants.

  • Read, understand, and follow the label.
  • Learn and follow all State and local rules.
  • Store pesticide safely in original containers.
  • Apply pesticides so that they do not endanger humans, or non-target animals or plants.
  • If a pesticide is swallowed or gets in the eyes, follow the first-aid treatment given on the label, and get prompt medical attention.
  • If a pesticide is spilled on your skin or clothing, remove clothing immediately and wash skin thoroughly.
  • Do not clean spray equipment or dump excess spray material in or near water.
  • Dispose of empty pesticide containers properly and promptly.

For additional information, please contact:

  • Lorraine Miller
    Ocala National Forest
    17147 East HWY 40
    Silver Springs, FL 34488
    Phone: (352) 625-2520
    TDD: (850) 942-9351
    Fax: (352) 625-7556
    Email: lorrainemiller@fs.fed.us

The use of trade or firm names in this publication is for reader information and does not imply endorsement by the U.S. Department of Agriculture of any product or service.

The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of programs information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at 202-720-2600 (voice and TDD).

To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326-W, Whitten Building, 1400 Independence AVE, SW, Washington, DC 20250-9410 or call 202-720-5964 (voice and TDD). USDA is an equal employment opportunity provider and employer.

This pamphlet was produced by the USDA Forest Service through a National Fish and Wildlife Foundation "Pulling Together Initiative" challenge grant, and donations by Monsanto Company and the University of Central Florida’s Agriculture-Horticulture Club and Environmental Society.


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USDA Forest ServiceUSDA APHIS PPQ The Bugwood Network University of Georgia Invasive.org is a joint project of The Bugwood Network, USDA Forest Service and USDA APHIS PPQ.
The University of Georgia - Warnell School of Forest Resources and
College of Agricultural and Environmental Sciences - Dept. of Entomology
Last updated on Thursday, July 25, 2002 at 03:12 PM
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