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Species
Information
- purple
loosestrife
- Lythrum
salicaria
L.
- USDA
Symbol: LYSA2
- Oregon
Noxious Weed Designation: B, T
- Pictures
ALERT: PLEASE CALL 1-866-INVADER IF YOU SUSPECT YOU HAVE FOUND THIS SPECIES
Identification:
Perennial; blooms midsummer. Grows up to 7 ft tall. Upright bushy plant. Flowers pink to purple, possessing 5-6 petals and numerous on a long spike. Spreads by seed and spreading rhizomes that form dense, woody mats.
Impacts: This former ornamental species can be found along wetlands, stream banks, and shorelines of shallow ponds. Its showy purple flowers crown a vigourous plant that crowds out marsh vegetation required by wildlife for food and shelter. Decreased waterfowl and songbird production has been well documented in heavily infested marshes.
Biological
Controls: Four biocontrol agents, two leaf beetles, a root weevil and a seed weevil, are approved for release and are established in Oregon.
Oregon
Maps of Purple Loosestrife Distribution
Links:
USDA
Plants Database information on purple loosestrife
GRIN
Database information on purple loosestrife
Oregon Department
of Agriculture information on purple
loosestrife
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