Watermeal bright green on fingers extreme close up

Control Watermeal

Many people ask how to get rid of watermeal. The following options can be considered for how to control watermeal.


Manual/Mechanical Control:

If you are considering how to remove watermeal, physically seining this plant can be a somewhat effective method of control. However, physical control can be difficult. Watermeal can re-grow from any seeds remaining in the water.


Herbicide Control:

There is an option for how to kill watermeal that offers great control.

  1. Semera or Flumigard + surfactant (for ponds or lakes) – granules that are dissolved and mixed or liquids that are mixed and diluted with water and sprayed over the plants (early morning is best), fast acting.


When treating watermeal,

  • It is important to apply product evenly over all active plant growth; this plant can replicate rapidly from untreated or surviving plants.
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