Charles Fisher Duckweed

Control Duckweed

Duckweed control is important in your pond or lake; many people ask how to kill Duckweed or how to get rid of Duckweed in a pond. There are multiple options for Duckweed killer.

Manual/Mechanical Control:

Physically raking or pulling out all the Duckweed can be an effective method of control, although Duckweed can replicate quickly from remaining buds.

Herbicide Control:

  1. Dibrox (for ponds and lakes) – liquid that is diluted with water and sprayed over the plants, fast-acting.
  2. Spritflo (for ponds with no outflow) – liquid that is poured into the water and spreads throughout the entire body of water, offers extended control.
  3. Semera or Flumigard (with Surfactant) – liquid or granules that are dissolved in water and sprayed (early morning is best) over the plants, fast-acting.
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