Report this species to:
- Bushy aquatic plant with dense whorls of bright green leaves
- Generally 4 leaves per whorl
- White, 3-petaled blooms float on the surface of the water
- Can grow up to 18 feet to water surface
- Easily confused with Hydrilla (another invasive) – Brazilian elodea leaves are smooth to the touch
Leslie J. Mehrhoff, University of Connecticut, Bugwood.org
VA Tech Weed ID Guide, VA Tech, Bugwood.org
Habitat: This submerged perennial can survive rooted or free floating in freshwater depths up to 20 feet. Brazilian elodea can be found in ponds, lakes, and sluggish rivers and streams.
Native Range: South America
U.S. Distribution: Brazilian elodea has been reported down the west coast and in the southeast from Texas up to Vermont and New Hampshire.
Local Concern: Rapid growth leads to dense, monospecific mats on the surface of the water. These mats crowd out native aquatic plant species, provide poor habitat for fish, and impede boat movement and other recreational activities.
Other Common Names: Brazilian waterweed, dense waterweed, leafy elodea
MDARD Weed Risk Assessment for Brazilian Elodea (Egeria densa) - This document evaluates the invasive potential of the plant species using information based on establishment, spread and potential to cause harm.