Pond vegetation management is an ongoing problem to almost anyone who owns or manages a pond. Aquatic vegetation is a natural and needed part of your ponds landscape. Plants provide oxygen to the water, provide habitat for aquatic organisms, and provide food, among many other benefits. Many times these plants become overpopulated and management is needed to provide a healthy environment, recreation, and aesthetic value to the landscape.
Most pond problems can be attributed to multiple factors including nutrients entering the system, poor pond construction design, and shallow water caused by sedimentation. Plants usually do not grow in water deeper than three feet because light penetration to this depth is low. A pond with many shallow areas will tend to have more aquatic weed problems.
Management may consist of many options including chemicals, mechanical removal, or stocking vegetation foraging fish. The most important step in setting up a program for vegetation management is the proper identification of plant to be controlled. Then determine the timing, rate, and the means of treatment to be used for the most cost effective control. It is best to begin management in April and May when infestations and temperatures are at a manageable level. Water temperatures usually have to be a minimum of 60 degrees to apply chemicals, but waiting until mid summer increases the chance of oxygen depletion and pond turnover.
When deciding on which method to use, do research to determine the best option for your situation and always follow product label. Our site provides many links to local problems and information regarding Ohio pond management. Multiple techniques may be needed for long term control.