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Purple Loosestrife

Scientific Name

Lythrum salicaria L. (ITIS)

Common Name

Purple loosestrife, spiked loosestrife

Native To

Eurasia (Munger 2002)

Date of U.S. Introduction

Exact date unknown; was established by the 1830s (Munger 2002)

Means of Introduction

Through ships' ballast and as an ornamental (Munger 2002)


Crowds out native species (Munger 2002)

Purple loosestrife
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Purple loosestrife, flower


Photo by Norman E. Rees; USDA, Agricultural Research Service

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Distribution / Maps / Survey Status


Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Council or Task Force
Federal Government
State and Local Government
  • Integrated Taxonomic Information System. Lythrum salicaria. [Accessed Sep 21, 2023].

  • Munger, G.T. 2002. Lythrum salicaria. In: Fire Effects Information System. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.