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Species
Information
- old
man's beard
- Clematis
vitalba L.
- USDA
Symbol: CLVI6
- Oregon
Noxious Weed Designation: B
- Pictures
Identification:
Perennial; blooms most of summer. Woody deciduous vine with stems growing up to 30 yards long. Leaves opposite and compound, usually with 5 leaflets. Flowers are small, greenish white and found in clusters in the upper leaf axils. Long feathery styles that produce a mass of white during the seed stage are responsible for the plant’s name.
Impacts:
In areas where this plant has naturalized, this species blankets shrubs and native trees over 60 feet tall. Once a tree collapses, the plant continues to grow along the ground in layers that are several feet thick, preventing the regeneration of any vegetation below it. Old man’s beard spreads quickly along river margins, but will establish in any area not intensively managed or grazed.
Biological
Controls: No approved biological control agent is available.
Oregon
Maps of Old Man's Beard Distribution
Links:
USDA
Plants Database information on old man's beard
GRIN
Database information on old man's beard
Oregon Department
of Agriculture information on old
man's beard
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