Noxious Weeds That Harm Washington State

More documents

Recommendations

Info

common fennelFoeniculum vulgareIdentification: Unlike the non-invasive annualbulbing fennel, common fennel is a very largeperennial herb that can grow from 4-10 feet tall.Alternate leaves are dark green or bronze withfine, feathery leaflets. It has flat-topped clustersof small, yellow flowers. It has a taproot thatcan be 10 feet long. All parts of the plant smelldistinctively like anise or licorice.Impact: Common fennel colonizes disturbedareas and grasslands, where dense stands outcompetenative plants. Already a problem incoastal California, common fennel is beginningto escape gardens and landscapes along rightsof-waysand shorelines in western <strong>Washington</strong>. Itposes an additional threat to our few remaininggrasslands.Control: Young plants can be hand-pulled andlarger plants can be dug out with a shovel, but besure to get the entire root. Do not mow if plantshave already set seed, since this will help spreadthe seeds. Selective herbicides can be effective onlarge infestations.W-16
Thurston County NWCBClass B <strong>Noxious</strong> Weed W-17
Page 1 and 2: Noxious WeedsThat Harm Washington S
Page 3 and 4: Common Name Botanical Name Pagebutt
Page 5: Why are there laws about noxious we
Page 8 and 9: common reedPhragmites australisIden
Page 10 and 11: yellow nutsedgeIdentification: Yell
Page 12 and 13: spurge laurelDaphne laureolaIdentif
Page 14 and 15: orange hawkweedHieracium aurantiacu
Page 16 and 17: uffaloburIdentification: A member o
Page 20: gorse / Scotch broomDescription: Go
Page 23 and 24: Rich Old, www.xidservices.comClass
Page 25 and 26: Rich Old,www.xidservices.comClass B
Page 27 and 28: Nancy Ness,Grays Harbor NWCBClass C
Page 29 and 30: King County NWCBKing County NWCBRic
Page 31 and 32: Fran LuceroFran LuceroKing County N
Page 33 and 34: Class A Noxious Weed W-31
Page 35 and 36: P. bohemicum, and P. polystachyumSk
Page 37 and 38: Class B Noxious Weed W-35
Page 39 and 40: Sue Winterowd, Stevens County NWCBC
Page 41: Class B Noxious Weed W-39
Page 44 and 45: purple loosestrifeIdentification: P
Page 46 and 47: flowering rushIdentification: Flowe
Page 48 and 49: shiny geranium/herb-RobertIdentific
Page 50 and 51: knapweeds: spotted, diffuse, & mead
Page 52 and 53: policeman’s helmetImpatiens gland
Page 54 and 55: thistles: slenderflower & CanadaIde
Page 56 and 57: thistles: milk & ScotchSilybum mari
Page 58 and 59: How can people help prevent andcont
Page 60: Protecting Washington’s resources

Noxious Weeds That Harm Washington State

Create successful ePaper yourself

Delete template?

Save as template?