Invasive Forest Weeds Resources

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Four Key Resources:

• King County Noxious Weeds Identification Photos – A great source of identification photos, information, and best managment practices
• Pacific Northwest Handbooks: Weed Managment Handbook – Noxious weed information on specific species, with treatment options, from OSU, WSU, and U of I
• Spokane County Noxious Weed List – A collection of fact sheets on invasive species
• Whatcom County Noxious Weed Fact Sheets – An extensive list of fact sheets on invasive species and management options

Topic List

Notes:

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General noxious weed resources

• Invasive Weeds Of Eastern Washington (PDF) – WSU Extension Manual EM005
• King County Noxious Weeds Identification Photos – A great source of identification photos and information
• Nonnative Invasive Plants of Pacific Coast Forests – A Field Guide for Identification (PDF) – USFS PNW-GTR-817
• Noxious Weeds: Everyone’s Enemy (YouTube) – A 50-minute informational video from WSU Extension on noxious weed identification and control
• Pacific Northwest Handbooks: Weed Managment Handbook – Noxious weed information on specific species, with treatment options, from OSU, WSU, and U of I
• Rights-of-Way Vegetation Management – WSU Extension Publication MISC0185
• Spokane County Noxious Weed List – An extensive list of fact sheets on invasive species
• Washington State Noxious Weed Control Board – Extensive information on the Washington State noxious weed list, relevant laws, and resources
• Whatcom County Noxious Weed Fact Sheets – An extensive list of fact sheets on invasive species and management options
• WSU Extension Weed Identification Service – Send in a sample or a photo and have your weed identified!

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State and county noxious weed agencies

Aquatic weed general resources

• Aquatic weed identification – King County Noxious Weed Program
• Auquatic Weed Idenification Flowchart (PDF) – King County Noxious Weed Program
• Aquatic Vegetation Management and Control – PNW Extension Manual PNW224
• Water Weeds: Guide to Aquatic Weeds in King County (PDF) – King County Noxious Weed Program Pamphlet

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The worst forest offenders: A selection of resources

• Absinth wormwood (Artemisia absinthium)

  • Absinth wormwood identification and control – King County Noxious Weed information
  • Absinth wormwood – WA State Noxious Weed Control Board information

• Butterfly bush (Buddleja davidii)

  • Butterfly Bush (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Invasive Weeds in Forestland: Butterfly Bush (PDF) – OSU Extension Bulletin EC1589
  • Butterfly bush identification and control – King County Noxious Weed information
  • Butterfly Bush – WSU Extension Bulletin EB2007E
  • Control Options for Butterfly Bush (PDF) – Whatcom County Noxious Weed Fact Sheet

• Common St. Johnswort (Hypericum perforatum)

  • St. Johnswort (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Common St. Johnswort identification and control – King County Noxious Weed information
  • Common St. Johnswort – WA State Noxious Weed Control Board information
  • Control Options for St. Johnswort(PDF) – Whatcom County Noxious Weed Fact Sheet

• Common tansy (Tanacetum vulgare)

  • Common tansy (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Common tansy identification and control – King County Noxious Weed information
  • Common tansy – WA State Noxious Weed Control Board information
  • Control Options for Common tansy(PDF) – Whatcom County Noxious Weed Fact Sheet

• English hawthorn (Crataegus monogyna)

  • English Hawthorn(PDF) – Whatcom County Noxious Weed Fact Sheet
  • English hawthorn identification and control – King County Noxious Weed information

• English holly (Ilex aquifolium)

  • Best Management practices for English Holly (PDF) – publication from Metro Vancouver and the Invasive Species Council of Metro Vancouver.
  • English Holly (PDF) – Whatcom County Noxious Weed Fact Sheet
  • English holly identification and control – King County Noxious Weed information
  • Control Options for English Holly(PDF) – Whatcom County Noxious Weed Fact Sheet

• English ivy (Hedera helix)

  • English Ivy (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Invasive Weeds in Forestland: English Ivy (PDF) – OSU Extension Bulletin EC1595
  • English ivy identification and control – King County Noxious Weed information
  • Control options for English ivy (PDF) – Whatcom County Noxious Weed Fact Sheet

• European mountain-ash (Sorbus aucuparia)

  • European mountain-ash identification and control – King County Noxious Weed information
  • European Mountain Ash – Washington State Noxious Weed Control Board

• Garlic mustard (Alliaria petiolata)

  • Garlic Mustard (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Invasive Weeds in Forestland: Garlic Mustard (PDF) – OSU Extension Bulletin EC1592
  • Garlic mustard identification and control – King County Noxious Weed information

• Giant hogweed (Heracleum mantegazzianum)…DANGEROUS!

  • Giant Hogweed (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Giant Hogweed – Ohio State University Extension Bulletin ANR-35
  • Giant hogweed identification and control – King County Noxious Weed information
  • Control Options for Giant Hogweed (PDF) – Whatcom County Noxious Weed Fact Sheet

• Gorse (Ulex europaeus)

  • Invasive Weeds in Forestland: Gorse (PDF) – OSU Extension Bulletin EC1593
  • Gorse identification and control – King County Noxious Weed information

• Hawkweeds, orange and yellow (Hieracium aurantiacum and Hieracium caespitosum)

  • Orange hawkweed – Washingon State Noxious Weed Control Board
  • Orange hawkweed (PDF) – Clallam County noxious weed alert
  • Orange hawkweed identification and control – King County Noxious Weed information
  • Yellow hawkweed identification and control – King County Noxious Weed information

• Herb-Robert (Geranium robertianum)

  • Herb-Robert (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Herb-Robert identification and control – King County Noxious Weed information
  • Control options for Herb-Robert (PDF) – Whatcom County Noxious Weed Fact Sheet

• Himalayan and evergreen (cut-leaf) blackberry (Rubus armeniacus and Rubus laciniatus)

  • Blackberry (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Invasive Weeds in Forestland: Himalayan Blackberry and Evergreen Blackberry (PDF) – OSU Extension Bulletin EC1594
  • Himalayan blackberry identification and control – King County Noxious Weed information
  • Control Options for Himalayan Blackberry (PDF) – Whatcom County Noxious Weed Fact Sheet

• Houndstongue (Cynoglossum officinale)

  • Houndstongue identification and control – King County Noxious Weed information
  • Houndstongue – WA State Noxious Weed Control Board information
  • Houndstongue (PDF) – Lincoln County Noxious Weed Fact Sheet

• Knapweeds, spotted, diffuse, and meadow (Centaurea stoebe, Centaurea diffusa, and Centaurea jacea x nigra)

  • Spotted Knapweed (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Spotted knapweed identification and control – King County Noxious Weed information
  • Spotted Knapweed – WA State Noxious Weed Control Board information page
  • SPOTTED KNAPWEED (PDF) – Clallam County Noxious Weeds fact sheet
  • Diffuse knapweed identification and control – King County Noxious Weed information
  • Diffuse Knapweed – WA State Noxious Weed Control Board information page
  • Meadow Knapweed (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Meadow knapweed identification and control – King County Noxious Weed information
  • Meadow Knapweed – WA State Noxious Weed Control Board information page
  • Control Options for Knapweeds (PDF) – Whatcom County Noxious Weed Fact Sheet

• Knotweeds (Polygonum sachalinense, P. cuspidatum, and P. x bohemicum)

  • Knotweeds (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Invasive Weeds in Forestland: Knotweeds (PDF) – OSU Extension Bulletin EC1597
  • Invasive knotweed identification and control – King County Noxious Weed information
  • Knotweed Shrubs: Identification, Biology, and Management (PDF) – PNW Extension Publication PNW610
  • Control Options for Knotweeds (PDF) – Whatcom County Noxious Weed Fact Sheet

• Old man’s beard (Clematis vitalba)

  • Old man’s beard (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Old man’s beard identification and control – King County Noxious Weed information
  • Control Options for old man’s beard (PDF) – Whatcom County Noxious Weed Fact Sheet

• Oxeye daisy (Linaria vulgaris)

  • Oxeye Daisy identification and control – King County Noxious Weed information
  • Oxeye Daisy – WA State Noxious Weed Control Board information

• Poison-hemlock (Conium maculatum)

  • Poison-Hemlock (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Poison-hemlock identification and control – King County Noxious Weed information
  • Poison Hemlock – WA State Noxious Weed Control Board information
  • Control Options for Poison-Hemlock (PDF) – Whatcom County Noxious Weed Fact Sheet

• Reed canarygrass (Phalaris arundinacea)

  • Reed Canarygrass (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Reed canarygrass identification and control – King County Noxious Weed information
  • Control options for Reed Canarygrass (PDF) – Whatcom County Noxious Weed Fact Sheet

• Scotch, French, Spanish, and Portuguese brooms (Cytisus scoparius, Genista monspessulana, Spartium junceum, and Cytisus striatus)

  • Scotch Broom (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Invasive Weeds in Forestland: Brooms (PDF) – OSU Extension Bulletin EC1598
  • French broom identification and control – King County Noxious Weed information
  • Scotch broom identification and control – King County Noxious Weed information
  • Spanish broom identification and control – King County Noxious Weed information
  • Control Options for Scotch Broom (PDF) – Whatcom County Noxious Weed Fact Sheet

• Spurge laurel (Daphne laureola)

  • Spurge Laurel (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Spurge laurel identification and control – King County Noxious Weed information
  • Control Options for Spurge Laurel (PDF) – Whatcom County Noxious Weed Fact Sheet

• Sulfur cinquefoil (Potentilla recta)

  • Sulfur cinquefoil (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Sulfur cinquefoil identification and control – King County Noxious Weed information
  • Sulfur cinquefoil – WA State Noxious Weed Control Board information
  • Control Options for Sulfur cinquefoil(PDF) – Whatcom County Noxious Weed Fact Sheet

• Tansy ragwort (Jacobaea vulgaris)

  • Tansy Ragwort(PDF) – Whatcom County Noxious Weed Fact Sheet
  • Invasive Weeds in Forestland: Tansy ragwort (PDF) – OSU Extension Bulletin EC1599
  • Tansy ragwort identification and control – King County Noxious Weed information
  • Control options for Tansy Ragwort (PDF) – Whatcom County Noxious Weed Fact Sheet

• Thistles, Canada, bull, and musk (Cirsium arvense, Cirsium vulgare, and Carduus nutans)

  • Bull Thistle (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Bull thistle identification and control – King County Noxious Weed information
  • Invasive Weeds in Forestland: Bull Thistle (PDF) – OSU Extension Bulletin EC1588
  • Canada Thistle (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Canada thistle identification and control – King County Noxious Weed information
  • Invasive Weeds in Forestland: Canada Thistle (PDF) – OSU Extension Bulletin EC1590
  • Musk thistle identification and control – King County Noxious Weed information
  • Musk Thistle – WA State Noxious Weed Control Board information
  • Musk Thistle (PDF) – Lincoln County Noxious Weed Fact Sheet
  • Control Options for Canada Thistle and Bull Thirstle (PDF) – Whatcom County Noxious Weed Fact Sheet

• Yellow archangel (Lamiastrum galeobdolon)

  • Yellow Archangel (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Yellow archangel identification and control – King County Noxious Weed information
  • Yellow Archangel – WA State Noxious Weed Control Board information

• Yellow toadflax (Linaria vulgaris)

  • Yellow toadflax (PDF) – Whatcom County Noxious Weed Fact Sheet
  • Yellow toadflax identification and control – King County Noxious Weed information
  • Yellow toadflax – WA State Noxious Weed Control Board information

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