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.

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.