Control Water Stargrass

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

Click here to read more about identifying this plant.

Manual/Mechanical Control:

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

Herbicide Control:

There are multiple options for how to kill water stargrass that offer great control.

1. Spritflo (for ponds with no outflow) – liquid that is poured and spreads throughout the entire body of water, offers extended control.
2. Hydrothol (for lakes) – granules that are broadcast over the plants.
3. Aquathol K/Super K (for lakes) – liquid that is diluted with water and sprayed or granules that are broadcast over the plants.
4. Imox (for ponds or lakes) (for submerged portions) – liquid that is mixed and diluted with water and sprayed over the plants.

Treatment Tips:

• Spritflo can be used at the first signs of growth.
• With other herbicides, treat when the plants are established and actively growing.
• If using Imox, check the label for rates or call Lake Restoration. You will use a much higher rate for within the water column than for other plants that are emerged.