European Frog-bit Surveys
Keeping watch for European frog-bit in Northern Michigan
CAKE CISMA surveyed selected lakes and wetlands across Antrim, Charlevoix, Emmet, and Kalkaska counties in 2026 for this emerging aquatic invasive plant. We’ll continue early-detection surveys in 2027.
2026 survey update
We did not find European frog-bit during this season’s surveys. That’s good news, and continued monitoring helps us watch for new populations while they may still be small.
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Why we're looking
European frog-bit is established in parts of Michigan, but CAKE CISMA has no known populations in our service area. In quiet waters, it can form dense mats that reduce light and oxygen, alter habitat for fish and ducks, and interfere with boating. Plant material can also spread to new waters on boats and recreational gear.
By looking for new populations early, we can find and work to control them before they spread further. If a population is found, CAKE CISMA can coordinate with EGLE and partners on next steps for management.