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Non-Regulated Noxious Weeds 

Though control of these weeds is not required in Pierce County, we highly encourage landowners to voluntarily control these widespread invasive species.   

Evergreen Blackberry
Evergreen Blackberry


Himalayan Blackberry

Common groundsel
Common Groundsel


Common St. Johnswort

Common Tansy
Common Tansy

Eurasian Watermilfoil
Eurasian Watermilfoil

Butterfly Bush
Eura. Watermilfoil Hybrid

Field Bindweed
Field Bindweed

garden loosestrife
Garden Loosestrife

Herb Robert
Herb Robert

Atlantic Ivy
Atlantic Ivy

English Ivy
English Ivy

Bohemian Knotweed
Bohemian Knotweed

Giant Knotweed
Giant Knotweed

Himalayan Knotweed
Himalayan Knotweed

Japanese Knotweed
Japanese Knotweed

Old Man's Beard
Old Man's Beard

Oxeye Daisy
Oxeye Daisy

perennial sow weed
Perennial Sowthistle

police mens helmet
Policeman's Helmet

purple loosestrife
Purple Loosestrife

Reed Canarygrass
Reed Canarygrass

Scotch Broom
Scotch Broom

Spurge Laurel
Spurge Laurel

Canada Thistle
Canada Thistle

Wild Carrot
Wild Carrot

Yellow Archangel
Yellow Archangel

Yellow Flag Iris
Yellow Flag Iris