Home Plant List

Malheur Experiment Station
Oregon State University

Lythrum salicaria

Purple Loosestrife (Lythrum salicaria)Lythrum salicaria
Common Names purple loosestrife
Family Loosestrife
Flower Color Purple
Plant Type Herb
Native No
Weed Noxious

Purple Loosestrife (Lythrum salicaria) Purple Loosestrife (Lythrum salicaria) Purple Loosestrife (Lythrum salicaria) cat-tail (Typha latifolia)
Purple Loosestrife (Lythrum salicaria)

This beautiful noxious weed is native to Europe and was accidently introduced to North America in the 1800s. It is a perennial wetland herb that grows in wetlands, farm ponds and other wet areas that have been disturbed. It's average height is 5 ft and it blooms in late June to late August with each flower having 5-7 petals. One plant can produce 300,000 seeds a year, as well be able to reproduce by offshoots and cuttings. It is a noxiouse weed because it crowds out our native plants and it can eventually destroy marshes and choke waterways. Although there are over 40 wild populations, 7 are considered non-aggressive and are available to purchase. Those seven are: Morden Pink, The Rocket, Rose Queen, Dropmore Purple, Columbia Pink, Morden Rose and Morden Gleam. purple loosestrife


For additional information please send an e-mail request to:
Dr. Clinton C. Shock
Clinton.Shock@oregonstate.edu

Malheur Agricultural Experiment Station
595 Onion Avenue
Ontario, OR 97914
(541) 889-2174
FAX (541) 889-7831

Malheur Experiment Station Web Site Purpose and Policy OSU Home Page OSU disclaimer