Purple Loosestrife

Lythrum salicaria L.

Purple loosestrife was originally introduced as an ornamental plant, but it soon become a threat to wet lands! It was estimated that in 1995 there were 11 acres of Purple loosestrife within six counties in Wyoming. In 1995 the first biocontrol release was made on the invading weed.

Invasive Exotic Plants of Canada Fact Sheet No. 4
Purple Loosestrife Management in the National Wildlife Refuge System
Biocontrol Profiles
Purple Loosestrife
LYTHRUM (loosestrife); Purple, Lythrum salicaria
Purple Loosestrife -- Desirable Perennial or Noxious Weed?
America's Least Wanted
Purple Loosestrife Resources on the Internet
BIOLOGICAL CONTROL OF PURPLE LOOSESTRIFE
PURPLE LOOSESTRIFE THE BIOLOGICAL POLLUTANT
Impacts of Introduced Species in the United States
A Primer on Native Plant Ecology and Gardening
NPCI Alien Plant Working Group - Purple Loosestrife (Lythrum salicaria)

Purple Loosestrife

Biological Control

Hylobius transversovittatus
Galerucella calmariensis and G. pusilla

Please Don't plant Purple Loosestrife! If you find a suspect plant please contact you local Weed and Pest or Extension Office.