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Species
Information
- Portuguese
broom (striated broom)
- Cytisus
striatus (Hill) Rothm.
- USDA
Symbol: CYST7
- Oregon
Noxious Weed Designation: B, T
- Pictures
ALERT: PLEASE CALL 1-866-INVADER IF YOU SUSPECT YOU HAVE FOUND THIS SPECIES
Identification:
Perennial; blooms April to June. Grows 3 to 10 ft tall. Evergreen shrub similar to Scotch broom except pods inflated and hairy all over, giving appearance of pussy willow buds. Stems more silvery, but difficult to distinguish until leaves and flowers fall off. Infestations are limited to two Oregon Counties: Douglas and Lane.
Impacts:
Portuguese broom is similar to Scotch broom in growth form except for two major differences: it grows much larger and lives longer. Infestations in Douglas county Oregon are highly competative in commercial timberland with the canopies of individual plants reaching almost 20' across.
Biological
Controls: Approved biocontrol agents have not been found to be effective in control of this plant due to its limited distribution and the presence of a parasitic wasp that feeds on it.
Oregon
Maps of Portuguese Broom Distribution
Links:
USDA
Plants Database information on Portuguese broom
GRIN
Database information on Portuguese broom
Oregon Department
of Agriculture information on Portuguese
broom
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