Check label for specific water use restrictions. Always read and follow all label directions. To see the labels for these products click on the name. Many aquatically registered herbicides have water use restrictions (See General Water Use Restrictions). To assist you with these determinations see SRAC #103 Calculating Area and Volume of Ponds and Tanks. One common problem in using aquatic herbicides is determining area and/or volume of the pond or area to be treated. Aeration, particularly at night, for several days after treatment may help control the oxygen depletion. If the pond is heavily infested with weeds, it may be possible (depending on the herbicide chosen) to treat the pond in sections and let each section decompose for about two weeks before treating another section. Oxygen depletion can kill fish in the pond. One danger with any chemical control method is the chance of an oxygen depletion after the treatment caused by the decomposition of the dead plant material. This herbicide will need a registered surfactant (see the label) for leaf and exposed sediment applications. Penoxsulam should not be applied in areas where it will be diluted rapidly. It may be sprayed directly onto emergent plants or applied directly into the water. Systemic herbicides tend to act more slowly than contact herbicides. Systemic herbicides are absorbed and move within the plant to the site of action. Penoxsulam is a broad spectrum, systemic herbicide. An aquatically registered surfactant (see the label) is needed for application.įluridone is a broad spectrum, systemic herbicide. Imazamox is a broad spectrum, systemic herbicide. An aquatically registered surfactant (see the label) will have to be added to the glyphosate solution for good results. It is a broad spectrum, systemic herbicide. Liquid glyphosate formulations have been effective on water lily.

An aquatically registered surfactant (see the label) will improve the effectiveness of triclopyr. Liquid triclopyr formulation is a selective broadleaf, systemic herbicide. Contact herbicides act quickly and kill all plant cells that they come into contact with.Ĭommon trade and product names include but are not limited to:Īlkyl amine salts of endothall come in both liquid and granular form.

It can be mixed with copper compounds for additional effectiveness. Systemic herbicides tend to act more slowly than contact herbicides.Ĭommon trade or product names include but are not limited to:ĭipotassium salts of endothall come in both liquid and granular form.

Army Corps of Engineers aquatic herbicide trials.Ģ,4-D compounds are systemic herbicides. The active ingredients that have been successful in treating water lily include: Read the label for specific water use restrictions. Click on the name of the product to see the label. Herbicide Control OptionsĪlways read the product label for directions and precautions, as the label is the law. Biological Management OptionsĪt this time, there are no available biological controls for water lily. Water lily can be cut and removed, but it is difficult to control physically because it can re-establish from seeds and rhizomes. More Info & Photos of Water Lily Non-Herbicide Management Options 1.

Super eraser herbcide