The Bugwood Network
water hyacinth
Liliopsida > Liliales > Pontederiaceae > Eichhornia crassipes (Mart.) Solms
Synonym(s): common water-hyacinth, floating water hyacinth, Eichhornia speciosa Kunth, Piaropus crassipes (Mart.) Raf.

Identification, Biology, Control and Management Resources
Biological Control of Invasive Plants in the Eastern United States - USDA Forest Service
Southeast Exotic Pest Plant Council Invasive Plant Manual - SE-EPPC

Selected Images from
Photographer:Josh Hillman -
Resolutions:768x512 - PowerPoint/Web
Photographer:Ted D. Center, USDA ARS
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
Description:Foliage and flowers
Photographer:Josh Hillman -
Resolutions:768x512 - PowerPoint/Web
Description:Large infestation in southern Florida
Photographer:Ted D. Center, USDA ARS
Resolutions:768x512 - PowerPoint/Web
1536x1024 - Print
Description:Distribution Map
Source:USDA NRCS, The PLANTS Database, September, 2003

Invasive and Noxious Weed References

  • Invasive Exotic Plant Species of Management Concern, USDA Forest Service, Southern Region, May 18, 2001 -
  • Florida Prohibited Aquatic Plants, Florida Bureau of Invasive Plant Management -
  • Proposed Exotic Pest Plant Species for Georgia, Georgia Exotic Pest Plant Council, August 12, 1999 -
  • Mississippi's 10 Worst Invasive Weeds -
  • South Carolina Department of Agriculture. 1983. Rules and Regulations, Noxious Weeds. South Carolina Department of Agriculture. -
Taxonomic Reference
USDA, NRCS. 2002. The PLANTS Database, Version 3.5 ( National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

USDA Forest ServiceUSDA APHIS PPQThe Bugwood Network University of Georgia Bargeron, C.T., D.J. Moorhead, G.K. Douce, R.C. Reardon & A.E. Miller
(Tech. Coordinators). 2003. Invasive Plants of the Eastern U.S.:
Identification and Control. USDA Forest Service - Forest Health
Technology Enterprise Team. Morgantown, WV USA. FHTET-2003-08.