Floating Classroom instructors Jordan and Bill made an incidental discovery of what looked like a non-native relative of Elodea canadensis while preparing for programs on August 16. We sent work to Bob Johnson at Cornell, a regional expert, who later confirmed the plant as Hydrilla verticillata, and extremely invasive species that has not been observed in upstate New York until now.
Take-home message: IT PAYS TO KEEP TO KEEP YOUR EYES OPEN. We are not experts in aquatic invasive species, but we are familiar enough with the lake to know when something looks odd. That's all it takes! Here is what you need to know.
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