I have a major coontail problem and would like to use Sonar or some other herbicide to kill at least some of it. I have introduced grass carp as well but am seeing no effects so far.(I have not given up on them and will continue to introduce for long term effect).
My pond has a number of impressive cypress trees along the shore and I do not want to jeopardize these. I am not familiar with the mode of action of the various choices of aquatic herbicides available for coontail. Which ones would be safe to use with respect to the cypress?

Layton Runkle

Layton Runkle