National Agricultural Pest Information System
Purple Loosestrife (Lythrum salicaria) is an invasive plant of wetlands. It is a native of Europe and was first detected in Northeastern United States in the early 1800's.
Purple loosestrife is widespread in the United States and Canada.
Summaries of State Plant Protection Laws and Regulations
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11/04/2011 - Eliminating Invasives is Ongoing Process
08/03/2011 - DNR Asks Citizens to Help Control Purple Loosestrife