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Water Hyacinth

Scientific Name

Eichhornia crassipes (Mart.) Solms (ITIS)

Common Name

Common water-hyacinth, floating water hyacinth

Native To

South America (Zhang et al. 2010)

Date of U.S. Introduction
Means of Introduction

Ornamental (Toft et al. 2003)


Forms dense colonies that block sunlight and crowd out native species (Toft et al. 2003)

Water hyacinth
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Water hyacinth, plants at Mara River


Photo by Ted D. Center; USDA, Agricultural Research Service

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Distribution / Maps / Survey Status


Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Council or Task Force
Federal Government
International Government
State and Local Government