The optimal time to treat for alligatorweed is when water temperatures are 60 degrees Fahrenheit (15 C.). Aquatic glyphosate and 2, 4-D are the two most frequent herbicides indicated for weed control. These require a surfactant for improved adhesion. The typical ratio is 1 gallon per 50 gallons of water.
This causes browning and disintegration within 10 days. The best outcomes are achieved by treating the weed in its early development phases. Older, thicker mats will require at least two treatments every year. Once the plant has died, it is fine to remove it or allow it to decompose in the soil. It may take many tries to eradicate alligatorweed, but this national weed causes hazards to native flora and wildlife and presents a problem to boaters, swimmers, and farmers.
Note: Chemical control should be used only as a last option, as organic methods are safer and more ecologically friendly: Alligator Weed Information – Learn How To Eliminate Alligatorweed
What brought alligator weed to Florida?
Overview of the Species Native to: South America In 1894, ballast water from ships accidently brought alligatorweed to Florida, where it currently grows throughout the state. This perennial plant with rhizomes may thrive in a number of settings, however it is most commonly seen in water. It creates expansive mats in deep rivers and along shorelines, and can be a nuisance on land.
Typically, 2,4-D degrades in soil to the extent that half of the initial quantity is gone between 1-14 days. This disintegration time is known as the pesticide’s ‘half-life’ One type of 2,4-D, the butoxyethyl ester, has a half-life of 186 days in aquatic sediment.
How long after spraying 2,4-D is it safe to mow?
Ask A Pro – DoMyOwn 725 Old Norcross Rd., Suite 200 Lawrenceville, Georgia 30046 United States: How long should I wait after spraying Hi-Yield 2,4-D Selective Weed Killer to my grass before mowing?