Control Phragmites

Phragmites are robust plants that can crowd out native vegetation, and they are difficult to get rid of completely. Many people ask how to get rid of Phragmites. The following options can be considered for how to control Phragmites.

Click here to read more about identifying this plant.

Manual/Mechanical Control:

If you are considering how to remove Phragmites, physically cutting and digging up the roots can be a somewhat effective method of control. However, physical control can be difficult because the rhizomes can spread 17 to 34 feet and grow new plants anywhere along the way.

Herbicide Control:

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

• 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 phragmites,

• 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, the Phragmites are pulling energy into their roots to store for the winter.
• A second treatment will likely be needed.