I have several shopping centers which we maintain & have to mow the retention areas throughout the year to keep the vegetation down. (pond only has water in it in the Spring, then dries up) It has a LOT of poison Ivy around the area, as well as woody vegetation. The times that we can't get in there & mow when there is water in there allows weeds & scrub trees to grow & quickly get out of control. I'm ignorant to aquatic options Are there selective herbicides with something like 2,4-d, triclopyr, etc., labeled for aquatic use? I'd like to be able to clean these areas up, so they look more presentable when we are not able to get in there because of standing water. (I DON"T have Aquatic certification, but am considering, if it would allow me to chemically control some of the weeds) Anyone else deal with retention areas?