Control Alligatorweed

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

Read more about identifying this plant.

Manual/Mechanical Control:

If you are considering how to remove alligatorweed, physically cutting this plant and digging up the roots can be a somewhat effective method of control. However, physical control can be difficult. Alligatorweed can re-grow from any stem fragments or roots remaining in the water.

Herbicide Control:

There is an option for how to kill alligatorweed that offers some control.

1. Cattail and Water Lily Control (Imox + surfactant) (for ponds or lakes) – liquids that are mixed and diluted with water and sprayed directly on the plants.

Treatment Tips:

When treating alligatorweed,

• With Imox or other systemic herbicides, treatment is most effective when the plants are mature or close to full grown. This allows for more plant surface to spray enough mixture on.
  • Treat in late summer to early fall to get better kill of the root systems. At this time, plants are pulling energy into their roots to store for the winter.