|
Species
Information
- perennial
pepperweed (broadleaved pepperweed)
- Lepidium
latifolium L.
- USDA
Symbol: LELA2
- Oregon
Noxious Weed Designation: B
- Pictures
Identification:
Perennial; blooms May to September. Grows 1 to 6 ft tall. Basal leaves larger than upper leaves, lanceolate, bright green to gray green, entire to toothed. Flowers white, very small, and form dense clusters near the ends of branches; flowers produce a distinctive odor. Seed very small, flattened, slightly hairy, and reddish brown.
Impacts: Perennial pepperweed is common in most western states where it invades roadsides, wet meadows, streamsides, ditches, and cropland. It can dominate moist pastures and wetlands if not controlled, making the ground marginal for waterfowl habitat or livestock production. Pepperweed roots draw salts from deep in the soil profile and deposit them on the soil surface. Soil productivity is sharply reduced by this action. Perennial peperweed is a salt tolerant species and has invaded salt marsh in the San Francisco Bay area.
Biological
Controls: No approved biocontrol agent is available.
Oregon
Maps of Perennial Pepperweed Distribution
Links:
USDA
Plants Database information on perennial pepperweed
GRIN
Database information on perennial pepperweed
Oregon Department
of Agriculture information on perennial pepperweed
|
