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How To Control Alligator Weedalligator weed

A common pond and water pest is Alligator weed. If left untreated, this invasive plant can become a serious ecological, economic and biological threat. The way it does this is by creating a thick mat which can clog waterways, leading to a reduction in waterflow as well as depleting oxygen due to weed decay.  The depletion of oxygen can lead to a reduction of waterfowl and fish activity around the body of water. The environment created by an alligator weed will attract mosquitoes which will use the habitat as a breeding ground. This is why it is so important to make an effort to remove alligator weed before it does some serious damage.

Alligator weed (alternanthera philoxeroides) is an invasive perennial weed which is native to South America and was first introduced to the United States around 1897. Alligator weed has long elliptical leaves which branch opposite on hollow stems. These stems can reach up to 4 feet high.  Alligator weed also has a small white paper-like flower that closely resembles clover.  The flowers are located on spikelets that rise from the leaf base.

Alligator weed spreads mainly from seed or fragmentation. Alligator weed commonly invades freshwater sites, estuaries, damp habitats, and various other types of wetlands. If you have alligator weed on your aquatic property, you will need the help of aquatic herbicides to treat the problem. Solutions Pest and Lawn has a plethora of effective aquatic herbicides which can get the job done and we have helpful resources and advice to teach you how to get rid of pond weeds like alligator weed.

Check out our alligator weed control products below. If you have any further questions or concerns, we are available to contact via email, phone or online live chat so don’t hesitate to reach out to us.

How To Get Rid of Alligator Weed: 3 Step Solution

Alligator weed can be a frustrating weed to get rid of especially when they have grown in bunches. That’s why we believe chemical approach is the best way to remove this invasive species. Mechanical or physical control are alternative options but they don’t work as well and can be largely ineffective because when cutting down alligator weed the weed tends to regrow from roots or fragments. However, while aquatic herbicides are the best choice for eliminating alligator weed, it isn’t merely a matter of pumping the water full of chemicals. Below you will find a simple to apply three step approach to controlling alligator weed and successfully eliminating it from the water.

Step 1: We recommend starting with a thorough inspection of the body of water. Analyze the size of the water, the vegetation in the water, what wildlife frequents the water as well as recreational activities that are done on the water. Various factors must be taken into account before proceeding with purchasing and applying a chemical to the water because you don’t want to damage desired plants and fishes you want in the pond or lake. Also you need to be certain that the weed is indeed alligator weed. Often times alligator weed can be confused with another species of aquatic weed. If you are not totally sure, send a photo of the weed to us via email at identification@solutionsstores.com and we will help correctly ID the weed and present you with herbicide options to tackle alligator weed.


Step 2:
Once you have carefully analyzed the water, you can then proceed with chemical control. Solutions Pest and Lawn has a variety of different aquatic herbicides, many which can specifically eradicate alligator weed. Some of our recommendations which can effectively control alligator weed includes Clipper Aquatic Herbicide Flumioxazin or Ecotriclopyr 3 SL Aquatic Herbicide among others. Our herbicides come in either liquid or granular form which each have their own advantages and disadvantages. What you choose is up to your preference and budget. Mix the selected aquatic herbicide in a sprayer and then make sure you have proper safety equipment on before moving forward with spraying. You should also select a time in early morning or late evening when the wind is calm to prevent spray drift into unwanted areas when applying the herbicide mixture.


Step 3:
Now you can proceed with treatment. Adjust the nozzle on the spray wand to a narrow spray pattern to allow for good coverage without an over concentration of the herbicide. Spray the leaves of the alligator weed, but do not apply the herbicide to the point of runoff to reduce the likelihood of contamination to the water in the area. Monitor the weed for die back and reapply as needed to achieve control. If you want more detailed how-to instructions check out our knowledge base.

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