Granular 2,4-D will work well, the only issue is getting it to the roots of the plant. If the Watershield is thick enough that it covers the water surface it might not work as well as the liquid Imazapyr.

Al, I agree with your approach.


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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).