Noxious Weed Fact Sheets

The following are fact sheets and management information for some of the more common Washington State/Whatcom County-listed Noxious Weeds in our area. They are divided into Terrestrial and Aquatic weeds. Information is also shown below for Other Weeds of Concern (not listed as Noxious). If you do not see the weed in which you are interested shown on this page, please contact the Noxious Weed Program for identification and management information. 

Terrestrial Weeds

  1. Blackberries
  2. Blackberry Management
  3. Bull Thistle
  4. Canada Thistle
  5. Thistle Management
  6. Butterfly Bush
  7. Butterfly Bush Management
  8. Catsear
  9. Common Fennel
  10. Common Fennel Management
  11. Common Groundsel
  12. Common Tansy
  13. Common Tansy Management
  14. Common Teasel
  15. Common Teasel Management
  16. English Hawthorn
  17. English Ivy
  18. English Ivy Management
  19. Garlic Mustard
  20. Giant Hogweed
  21. Giant Hogweed Management
  22. Herb Robert
  23. Herb Robert Management
  24. Italian Arum
  1. Italian Arum Management
  2. Himalayan knotweed
  3. Knotweeds
  4. Knotweeds Management
  5. Kudzu
  6. Lesser Celandine
  7. Lesser Celandine Management
  8. Milk Thistle
  9. Myrtle Spurge
  10. Old Mans Beard
  11. Old Mans Beard Management
  12. Orange Hawkweed
  13. Oriental Clematis
  14. Pampas Grass
  15. Perennial Pepperweed
  16. Poison hemlock
  17. Poison Hemlock Management
  18. Policemans Helmet
  19. Policemans Helmet Management
  20. Ravenna Grass
  21. Reed Canarygrass
  22. Reed Canarygrass Management
  23. Scotch Broom
  24. Scotch Broom Management
  1. Scotch Thistle
  2. Shiny Geranium
  3. Silver Lace Vine
  4. Smooth Hawkweed
  5. Spanish Broom
  6. Spotted Knapweed
  7. Meadow knapweed
  8. Knapweeds Management
  9. Spurge Laurel
  10. Spurge Laurel Management
  11. St. Johnswort
  12. St Johnswort Management
  13. Sulfur Cinquefoil
  14. Sulfur Cinquefoil Management
  15. Tansy Ragwort
  16. Tansy Ragwort Management
  17. Comparison of Tansy Ragwort & Similar Plants (PDF)
  18. Velvetleaf
  19. Yellow Archangel Management
  20. Yellow Nutsedge
  21. Wild Chervil
  22. Wild Chervil Management
  23. Wild Carrot
  24. Yellow Archangel

Other Weeds of Concern

  1. Bamboo Management
  2. Bitter Nightshade
  3. Bitter Nightshade Management
  4. Burdock
  5. Buttercup
  6. Buttercup Management
  7. Cleavers
  8. Curly Dock
  9. English Holly
  1. English Holly Management
  2. Hedge Bindweed
  3. Hedge Bindweed Management
  4. Horse Weed
  5. Horsetail
  6. Horsetail Management
  7. Jewelweed
  8. Jimsonweed
  9. Moleplant
  1. Periwinkle
  2. Petty Spurge
  3. Pineapple Weed
  4. Purslane
  5. YellowToadflax
  6. Mares-tail
  7. Pondweeds
  8. Water Celery
  9. Western Waterhemlock

Aquatic Weeds

  1. Brazilian Elodea
  2. Curly-leaf Pondweed
  3. Eurasian Watermilfoil
  4. Flowering Rush
  5. Fragrant Water Lily
  6. Garden Loosestrife
  7. Garden Loosestrife Management
  8. Hairy Willow-Herb
  9. Hairy Willow-Herb Management
  10. Hydrilla
  11. Japanese Eelgrass
  1. Parrotfeather
  2. Lesser Cattail
  3. Phragmites
  4. Purple Loosestrife
  5. Purple Loosestrife Management
  6. Comparison of Loosestrife & Similar Plants (PDF)
  7. Spartina
  8. Yellow Flag Iris
  9. Yellow Flag Iris Management
  10. Yellow Floating Heart