07/29/2026
Earlier this summer, Michigan added six plants to the state’s invasive species list, including two aquatic plants commonly used in water gardens: water hyacinth and water lettuce.
As of June 19, 2026, water hyacinth and water lettuce are prohibited from sale in Michigan. That means they may not be purchased online or from out-of-state retailers, and they should not be shared or traded with others.
For homeowners, this does not mean immediate action is required if these plants are already present on your property. The key reminder is to manage them carefully and dispose of them properly so they do not spread. Water garden plants and aquarium plants should never be released into lakes, rivers, storm drains, retention ponds, or other natural waterways.
These two species have been on Michigan’s invasive species watch list for years because they can reproduce quickly, crowd out native aquatic plants, interfere with water flow, and degrade fish and wildlife habitat. Preventing their sale and spread is one more tool for protecting Michigan’s lakes and streams.
Read the full MSU Extension article here: https://www.canr.msu.edu/news/michigan-expands-invasive-plant-list-what-retailers-and-homeowners-need-to-know
