|
Species
Information
- ragweed
- Ambrosia
artemisiifolia
L.
- USDA
Symbol: AMAR2
- Oregon
Noxious Weed Designation: B
- Pictures
Identification:
Annual; blooms late summer. Grows to 4 ft tall. Stems and leaves blue-green and covered with fine hairs. Leaves divided and bottom sides covered in fine hairs, giving a gray appearance. Flowers inconspicuous and found on terminal branches.
Impacts:
This plant is common throughout the West and causes hay fever in many people. It is commonly found along ditches and waste areas. It is not highly competitive in crops or rangeland.
Biological
Controls: No approved biological control agent is available.
Oregon
Maps of Ragweed Distribution
Links:
USDA
Plants Database information on ragweed
GRIN
Database information on ragweed
Oregon Department
of Agriculture information on
ragweed
|
