A customer recently contacted us regarding the control of emersed weeds and grasses before they reach the surface of the water. Below is his question and a response.
Q: Is there any product that kills emersed weeds BEFORE they grow above the water? My objective is to not have anything visually growing above water. So waiting until they grow to apply the herbicide in late season doesn't help accomplish my objective.
A: We do offer pre-emergent aquatic herbicides for treating SOME types of emergent weeds. The Aquacide Pellets will work on growing weeds that have yet to hit the surface of the water, however the Aquacide Pellets are a broadleaf herbicide and will not work for narrowleaf forms of weeds. The only sure way to tell what you have growing is to let them grow up out of the water and send us a sample. You may also want to check with neighbors or the local county extension, as they may have an idea as to what you have growing in your area.
Please feel free to email me or post questions you may have and I will respond accordingly.