It’s summer. It’s hot. Some things are inevitable in south Alabama. Those of you with lakes and ponds may also be experiencing another inevitability, pond weeds. Chances are at some point, you will have something growing in your pond that you don’t want, aren’t sure where it came from, and would love nothing more than to eradicate it. The good news is your Alabama Extension System is here to help. The answers to several questions can lead to ultimate (and less expensive) success. First, is it a plant or algae? What is the alkalinity of the water? Where in the pond is it growing? Have you identified it? How much of it do you have? Are you fertilizing? Where does the water that supplies your lake come from (well, spring, runoff, etc.)? Before you buy anything to kill the weed(s), let us help match the best options available to the problem you are dealing with. This may involve sending in weed and water samples but can save time and money in the long run.
Things to keep in mind:
- The first step in weed control is to identify the weed.
- Make absolutely certain you select an aquatically approved weed control option; read, understand, and follow all labeling instructions.
- In the heat of the summer, treat no more than 25% of the pond/lake at one time and wait at least 14-21 days between treatments.
- Weed control is a slow, methodical battle that is often won not with herbicides, but with nutrient control.
For additional questions or information, contact P.J. Waters, Auburn University Marine Extension and Research Center, 438-5690.