Pond Boss Forums POND CONSTRUCTION Creating habitat Pondering Curly leaf Pond weed

I'd wait until the fall, then apply a low dose of Fluridone if the pond doesn't have flow thru water. That will kill any CLPW that sprouts from the turions that were set this summer.

Or, if you want to have some short cover in the pond over winter, apply the fluridone early next spring after ice-off, but that may not be possible if there is significant rainfall or snowmelt.