Control Azolla, Mosquito Fern

Manual/Mechanical Control:

Physically raking Mosquito Fern from the water’s surface can be an effective method of control.

Herbicide Control:

There are a few options to control Mosquito Fern:

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