DuckweedIdentifying Duckweed

Physical Characteristics


  • 1-3 leaves
  • 1/16 to 1/8 inches long
  • Light-green
  • Nearly flat on both sides
  • Flat, oval shape


  • Small, bladder-like shape
  • Slightly winged


  • Long rigid seed or smooth with spongy outer layer


  • Single root
  • Cluster together with other duckweed in groups of 2 to 5+

Where Does it Grow?

Duckweeds tend to grow in dense colonies in quiet water, undisturbed by wave action. Often more than one species of duckweed will be associated together in these colonies.

Duckweed Control For Lakes & Ponds

Physical Management of Duckweed

Since Duckweed is a floating plant it can be removed by raking or skimming the ponds surface. It has the ability to multiply rapidly and may take multiple cleanings throughout the year to keep it under control using a rake or skimmer.

Products To Physically Manage Duckweed

Algae Parachute Skimmer-          Parachute Skimmer

Our parachute skimmer measure 5 feet in width and comes with a 24 foot pull line. It is constructed of 2 horizontal bars, one which has a floating device, and a screening net.

When you throw the parachute skimmer into the lake or pond, the bottom bar drops and creates an opening to collect Duckweed into the net as you pull it back to shore or to your boat.


Automated Control of Duckweed

For homeowners, automated control of Duckweed is ideal when your lake bottom has been cleared and you want to keep it that way without having to continuously labor away raking weeds.

Additionally, automated Duckweed control products means there is no down time when it comes to enjoying your lakefront property. Whenever the need arises, simply throw on your swim suit and go jump in the water.

Automated Products To Control Blue-Green Algae

Aqua Thruster Algae Control-          Aqua Thruster

The Aqua Thruster is the most effective tool to protect, clean and maintain your lakefront property from Duckweed. This product has been our best seller for year because our customers love it and it prevents everything from muck, dead lake weeds, algae, leaves, twigs and other debris from building up on your lake bottom

The Aqua Thruster comes standard with a ½ horsepower 110 volt motor that is capable of blowing muck away up to 30 feet. We also have ¾, 1 and 2 horsepower motors available and an optional oscillator that will blow Duckweed away 200 feet or more in 360 degrees.


Herbicide Control of Duckweed

Herbicide control is a great option for Duckweed because you can literally apply the herbicide and then sit back and let it do its work. Most herbicides can control Duckweed throughout the season and only needs to be applied once a year.

Herbicide Products To Control Duckweed

-          Flumigard Herbicide

Clipper Herbicide Algae Control

Flumigard herbicide shows signs of Duckweed eradication within hours of application and generally yields a complete kill within 7 to 14 days. The active ingredient in Flumigard is Flumioxazin which was approved for aquatic use in 2010.