Duck lettuce floating in water with leaves and two flowers.

Control Duck Lettuce

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


Manual/Mechanical Control:

If you are considering how to remove duck lettuce, physically pulling this plant out of the water before the seeds set can be an effective method of control for small populations.


Herbicide Control:

We have a few possible options for how to kill duck lettuce that may offer control.

  1. Dibrox (for ponds or 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 and spreads throughout the entire body of water, offers extended control.
  3. 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.


Treatment Tips:

When treating duck lettuce,

  • Treat when the plants are established and actively growing, but before the seeds set.
  • Duck lettuce is not listed on any of the above herbicide labels, but they are broad spectrum herbicides and will control a wide variety of weeds.
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