Common Fennel Pierce County Noxious Licorice scented perennial 4- Weed Control Board 10 ft. tall are dark green and The Terrible feathery Bears umbrella shaped clusters of small yellow Ten Tap can reach depths of 10 feet Outcompetes native and reduces native wildlife habitat Once established it is difficult to control, due to its strong competitive abilities and persistent bank

Dalmatian Toadflax

Perennial herb 2.5 to 5 feet tall Waxy, heart shaped, light green leaves Bright yellow flowers with a tinge of orange in the center, looks like a snapdragon A persistent, aggressive in- vader, pushing out native grasses and other perennials. Rapidly colonizes open sites Weeds of Concern Contains poisonous alkaloid, toxic to livestock for

Pierce County Wild Chervil

Biennial grows from 1 to 4 ft. tall Has hollow ridged stems Pierce County Noxious Weed with -like leaves Control Board Bears small white umbrella shaped clusters 1420 112th St. E Poses a serious threat to Tacoma, WA 98445 native plants and agricul- 1420 112th Street East ture Tacoma, WA 98445 253-798-7263 Is highly adaptable and will grow in almost any type of soil. Phone: 253-798-7263 It has an aggressive growth habit , quickly creating monocul- tures. Most of Pierce County is highly susceptible to Wild Chervil

THE TERRIBLE Gorse Poison Hemlock TEN A dense, spiny, evergreen Weeds of Concern Toxic biennial plant up to 8 ft. tall , 3-10 ft. tall, closely resembles scotch broom for 1st year: basal rosette with fern- like leaves Aggressive, invasive plant crowds out other vegetation, forming impenetrable 2nd year: produces tall stem with Tansy stands of dense thorny growth distinctive purplish blotches and Ragwort dark green, glossy, leaves Has sharp thorn-like leaves up to 3 in. long Flowers are flat-topped clusters of Clusters of bright yellow, pea-like flowers form into Invasive, persistent, toxic weed small, white, flowers inch-long pods containing 1 – 4 1st year: rosette stage; dark All plant parts are extremely poisonous to humans and live- Plants form a center of dry, dead vegetation, that cou- green basal leaves, ruffled in stock. pled with its high oil content creates a serious fire appearance hazard Wear gloves and protective clothing when handling this plant, 2nd year: One or more flower- can cause contact dermatitis ing stems bolt up to 6 ft. tall Do not burn or compost this plant Perennial Produces numerous yellow flowering heads which are daisy-like in appearance with 13 Pepperweed Contains toxins that cause chronic irreversible liver Knapweeds damage; a threat to livestock and agriculture Bushy plant about 3 ft. tall Giant There are 3 species of knap- Waxy leaves & rounded weed that threaten Pierce Hogweed clusters of small white flow- County: spotted, diffuse, and ers at branch tips meadow knapweed. Aggressive, non-native Huge perennial plant Rosette formed the first year, plant displaces native species from15-20 ft. tall flowering stalk elongates the Poses serious threat to natural areas, it is invading Hollow stems 2-4 in. second year. thick with dark red- Easily identified by its Dyers Woad dish, bumpy blotches (the -like structure at the base of the bloom)

Its enormous com- arranged in an imbricate pattern, like shingles on a roof. An aggressive weed, grows from pound leaves (up to 5 Bracts are spine tipped or scaly 1-4 feet tall ft. wide) are deeply Flowers are lavender to pink and sometimes white divided and edges are Very aggressive species, one of the most domi- 1st year: rosette stage: bluish jagged nant weeds of the west, can infest large areas green succulent leaves with fine hairs White umbrella-like, flat topped flower-heads can very quickly reach up to 2.5 ft. wide Contains phytotoxins which inhibit the 2nd year: numerous stiff stalks The toxic from this plant causes severe burning growth of surrounding native plants, allowing bolt up bearing small yellow flowers and scarring which may last years. Do not handle knapweed to outcompete and form monocul- without gloves, goggles and protective clothing. Wa- tures Contains a inhibitor chemical, which tery sap squirts up to 5 ft when stem is cut or broken limits the growth of nearby plants, giving Dyers Has very long tap Woad seedlings a growth advantage over desirable native plants