5085 thumb Selected Invasive Plants of Alaska

"When trying to identify an unknown plant, color photos often help.[] Non-native invasive plants displace native vegetation, degrade wildlife habitat, and negatively affect human health, the economy, and the environment. Factors such as geographic isolation and harsh winters have protected Alaska ...more ↓

Small
bull thistle 1
Cirsium vulgare
Small
ox-eye daisy 2
Leucanthemum vulgare
Small
Fox-and-cubs 3
Hieracium aurantiacum
Small
spotted knapweed 4
Centaurea stoebe micranthos
Small
meadow hawkweed 5
Hieracium caespitosum
Small
Creeping Thistle 6
Cirsium arvense
Small
Mouse-ear Hawkweed 7
Pilosella officinarum
Small
false dandelion 7
Hypochaeris radicata
Small
Canada Hawkweed 9
Hieracium umbellatum
Small
Tansy 10
Tanacetum vulgare
Small
yellow salsify 11
Tragopogon dubius
Small
Perennial Sow Thistle 12
Sonchus arvensis
Small
Japanese knotweed 13
Fallopia japonica
Small
Common Sowthistle 14
Sonchus oleraceus
Small
White Sweet Clover 15
Melilotus albus
Small
yellow sweet clover 15
Melilotus officinalis
Small
garlic mustard 16
Alliaria petiolata
Small
tufted vetch 17
Vicia cracca
Small
hairy vetch 18
Vicia villosa
Small
Scots Broom 19
Cytisus scoparius
Small
Common Toadflax 20
Linaria vulgaris
Small
Himalayan Balsam 21
Impatiens glandulifera
Small
Common hemp-nettle 22
Galeopsis tetrahit
Small
cheat grass 23
Bromus tectorum
Small
Reed Canarygrass 24
Phalaris arundinacea
Small
Foxtail Barley 25
Hordeum jubatum
Small
two-rowed stickseed 6
Lappula squarrosa
Small
Siberian peashrub 10
Caragana arborescens

Edited by USFS Alaska, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) beautifulcataya, some rights reserved (CC BY-NC-ND)
  • 2. (c) AnneTanne, some rights reserved (CC BY-NC)
  • 3. (c) Eric Guimbard, some rights reserved (CC BY-NC-SA)
  • 4. (c) zen Sutherland, some rights reserved (CC BY-NC-SA)
  • 5. (c) Anita, some rights reserved (CC BY-NC-SA)
  • 6. (c) Matt Lavin, some rights reserved (CC BY)
  • 7. (c) Jon Sullivan, some rights reserved (CC BY-NC)
  • 8. (c) Bas Kers (NL), some rights reserved (CC BY-NC-SA)
  • 9. (c) Eva Ekeblad, some rights reserved (CC BY-NC-SA)
  • 10. (c) Kingsbrae Garden, some rights reserved (CC BY-NC-SA)
  • 11. (c) José María Escolano, some rights reserved (CC BY-NC-SA)
  • 12. (c) Frank Mayfield, some rights reserved (CC BY-SA)
  • 13. (c) marie, some rights reserved (CC BY), uploaded by Marie Studer
  • 14. (c) Phil Sellens, some rights reserved (CC BY)
  • 15. (c) Steve Chilton, some rights reserved (CC BY-NC-ND)
  • 16. (c) 57Andrew, some rights reserved (CC BY-NC-ND)
  • 17. (c) Liisa-Maija Harju, some rights reserved (CC BY-NC-ND)
  • 18. (c) Gena Bentall, some rights reserved (CC BY-NC)
  • 19. (c) wayne tucker, some rights reserved (CC BY-ND)
  • 20. (c) Dan Mullen, some rights reserved (CC BY-NC-ND)
  • 21. (c) Roy Wichert-Gonsalves, some rights reserved (CC BY-NC-ND)
  • 22. (c) Bastiaan, some rights reserved (CC BY-NC-ND)
  • 23. (c) Biopix, some rights reserved (CC BY-NC)
  • 24. (c) Aaron Ellig, some rights reserved (CC BY-ND)
  • 25. (c) James Bailey, some rights reserved (CC BY-NC)
  • 26. (c) Wendy Cutler, some rights reserved (CC BY)

Is this inappropriate, spam, or offensive? Add a Flag