MULTNOMAH COUNTY
Click on a link below to access weed data maps for Multnomah County, Oregon. Data maps reflect data collected by federal, state, county and local weed control agencies; they do not always represent the entire distribution of the weed.
View maps by weed
|
B |
Bull thistle |
|
Cirsium vulgare |
|
B |
Butterfly bush |
|
Buddleja davidii |
|
B |
Canada thistle |
|
Cirsium arvense |
|
B |
Dalmatian toadflax |
|
Linaria dalmatica+ |
|
B |
Diffuse knapweed |
|
Centaurea diffusa |
|
B |
English ivy |
|
Hedera helix |
|
B |
Field bindweed |
|
Convolvulus arvensis |
|
B |
Garlic mustard |
|
Alliaria petiolata |
|
A,T |
Giant hogweed |
|
Heracleum mantegazzianum |
|
B |
Giant knotweed |
|
Polygonum sachalinense |
|
B |
Himalayan blackberry |
|
Rubus discolor |
|
B |
Himalayan knotweed |
|
Polygonum polystachyum |
|
B |
Japanese knotweed |
|
Polygonum cuspidatum |
|
A,T |
Kudzu |
|
Pueraria lobata |
|
B |
Lesser celandine |
|
Ranunculus ficaria |
|
B |
Meadow knapweed |
|
Centaurea pratensis |
|
B |
Milk thistle |
|
Silybum marianum |
|
B |
Old man's beard |
|
Clematis vitalba |
|
B |
Poison hemlock |
|
Conium maculatum |
|
B, T |
Purple loosestrife |
|
Lythrum salicaria |
|
B |
Quackgrass |
|
Agropyron repens |
|
B, T |
Rush skeletonweed |
|
Chondrilla juncea |
|
B |
Scotch broom |
|
Cytisus scoparius |
|
B |
Small broomrape |
|
Orobanche minor |
|
B, T |
Spotted knapweed |
|
Centaurea maculosa |
|
B |
Spurge laurel |
|
Daphne laureola |
|
B |
St.Johnswort (Klamath weed) |
|
Hypericum perforatum |
|
B, T |
Tansy ragwort |
|
Senecio jacobaea |
|
B |
Yellow flag iris |
|
Iris pseudacorus |
|
B |
Yellow toadflax |
|
Linaria vulgaris |
|
