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Identify pond weeds and the correct treatments

Click on the pond weed pictures below for photos, descriptions, & suggested treatments

Submerged Pond Weeds

Floating Pond Weeds

Shoreline Weeds

Why is it important to identify pond weeds?

Knowing how to identify pond weeds is a key step in selecting the best weed treatment. There are many common and similar pond weeds that that can be confused. Many aquatic weed treatments target specific species or types of pond weed so knowing the plant helps select the best treatment.

Some weeds are treated by where they are in the pond. Submerged pond weeds need a different aquatic herbicide than shoreline weeds or emergent weeds that rise above the water. Not only do the treatments vary, but the amount of chemicals needed is usually greater for submerged weeds.

Species like duckweed that are found floating on the water but have a root system may require still different treatments. Watermeal is another of the floating pond weeds that needs a specific treatment. Submerged plants can also be treated with granular aquatic herbicides that provide treatment for longer time periods.

Free floating plants can also be mistaken for algae that requires a different set of treatment. Algae can also be controlled by limiting sunlight penetration in shallow ponds and excess nutrients.

It is also very important to be able to distinguish between a native plant and the often non-native aquatic plants that can take over a pond if left uncontrolled.

Some pond weeds are more difficult to identify than others. Sago pondweed identification can be tricky while American Pondweed is more straightforward. Take a closer look at the ID guide images to be sure that you know your water weeds and then manage the plants with the recommended treatments.

What if I can't identify my pond grass or weed?

Not a problem! Natural Waterscapes is here to help with your pond weed's identity! Our friendly pond and lake experts can readily identify most water weeds in North America. In most cases, you can simply send us an image of the water weed.

We recommend scooping floating weeds into your hand before taking a picture. Sometimes, our experts may ask you to send us a sample of the aquatic plant for positive weed identification.

After identifying the pond grass or floating weeds, we will recommend natural or chemical control. Controlling aquatic weeds depends on its location, the size of the lake or pond, and the amount of weed present. The method used to control pondweed will vary depending on these factors.