05/22/2026
Keep an eye out for these two Invasive Species on our local lakes...
Water hyacinth and water lettuce are currently Michigan Watch List species, but their regulatory status is changing this summer.
Effective June 19, 2026, both aquatic plants will be added to Michigan’s prohibited species list. After that date, it will be unlawful to introduce, import, sell, possess with intent to distribute, or intentionally propagate these species in Michigan.
Some CLMP volunteers may have handled and identified these plants during aquatic plant training at the MLSA conference earlier this month. Both are floating aquatic plants that can form dense mats and impact native plants, habitat, recreation, and water movement.
If you see water hyacinth or water lettuce outside of cultivation, report it to the EGLE Aquatic Invasive Species Program or through MISIN. https://www.michigan.gov/invasives
Learn more:
https://www.michigan.gov/invasives/id-report/plants/aquatic/water-hyacinth
https://www.michigan.gov/invasives/id-report/plants/aquatic/water-lettuce