Kelly Duffie our weed management expert my be able to help us. You very likely have a true aquatic moss. A better close up picture of 1 or 2 strands in a bowl of shallow water or a sprig in your hand will help verify the name. Aquatic mosses have very rarely been discussed here. Sphagnum moss is a type of aquatic moss. I'm not sure of the best control methods for the aquatic mosses.


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