-
First Reported In The U.S.
Forms dense mats that crowd out native species and impede recreational activities such as boating, swimming, and fishing. -
Lacey act
The Lacey Act of 1900 (18 U.S.C. §§42-43; 16 U.S.C. §§3371-3378) addresses illegal wildlife
trade to protect species at risk and bars importing species found to be injurious to the United
States. -
The biological control of alligatorweed in the U.S.
Alligatorweed, Alternanthera philoxeroides (Mart.) Griseb., an aquatic amaranth introduced into the United States from South America around 1900, was recognized as a threat to the aquatic ecosystem as early as 1901. It has been classed as a weed because of its competitive advantage over our native flora. A 1963 survey found the weed commonly throughout the southeastern United States. -
Weeds of National Significance
Alligator weed is a Weed of National Significance. It is regarded as one of the worst weeds in Australia because of its invasiveness, potential for spread, and economic and environmental impacts. It is an especially troublesome weed because it invades both land and water, and is very hard to control. -
Facts about alligatorweed in the U.S.
Alligator weed poses an extreme threat to Queensland’s
waterways, wetlands and irrigated crop lands from Cape
York to the southern border.