Pistia stratiotes
Non-Native
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USDA, NRCS. 2018. The PLANTS Database (http://plants.usda.gov, 28 March 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.
Illustration courtesy of University of Florida/IFAS Center for Aquatic and Invasive Plants. Used with permission.
What is Water Lettuce?
Overview
Physical Characteristics
Tends to form floating mats that clog water ways.
Leaves:
- Clustered on very short branches
- Wedge- or oval-shaped
- About 10 inches long
- Point upward
Roots:
- Floating plant
- Long and submersed
Where Does it Grow?
EDDMapS. 2024. Early Detection & Distribution Mapping System. The University of Georgia – Center for Invasive Species and Ecosystem Health. Available online at http://www.eddmaps.org/; last accessed February 8, 2024.
Non-Native
Water Lettuce grows in streams, lakes, and ponds.
Is it Invasive?
Water lettuce is non-native to the United States. Water lettuce is a very aggressive invader and can form thick floating mats. If these mats cover the entire surface of the pond they can cause oxygen depletion and fish kills. Water lettuce should be controlled so they do not cover the entire pond.
This is a non-native plant that should not be grown as it is invasive and illegal to possess or transport this species in Texas. Please report sightings to the Texas Parks and Wildlife Department at (512) 389-4800.