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 ↓

3804996777 6f334220ac m
bull thistle 1
Cirsium vulgare
Small
ox-eye daisy 2
Leucanthemum vulgare
642397360 c1d409dd10 m
Fox-and-cubs 3
Hieracium aurantiacum
4905847851 69f0a6e776 m
spotted knapweed 4
Centaurea stoebe micranthos
Small
meadow hawkweed 5
Hieracium caespitosum
4972345384 d7bafb0d5b m
Creeping Thistle 6
Cirsium arvense
Small
Mouse-ear Hawkweed 7
Pilosella officinarum
2798846989 e852953e53 m
false dandelion 7
Hypochaeris radicata
1209134317 5fda3eddd6 m
Canada Hawkweed 9
Hieracium umbellatum
1175159336 1595af0a35 m
Tansy 10
Tanacetum vulgare
4690489941 f6e3f26832 m
yellow salsify 11
Tragopogon dubius
5320745981 d0ec43fded m
Perennial Sow Thistle 12
Sonchus arvensis
Small
Japanese knotweed 13
Fallopia japonica
3535847370 6391db8170 m
Common Sowthistle 14
Sonchus oleraceus
812318237 ea1320be1b m
White Sweet Clover 15
Melilotus albus
874582141 f676d69b1c m
yellow sweet clover 15
Melilotus officinalis
16647291293 32698e46c5 m
garlic mustard 16
Alliaria petiolata
2674769792 54d8f7a964 m
tufted vetch 17
Vicia cracca
Small
hairy vetch 18
Vicia villosa
4639771711 e69b6acf7a m
Scots Broom 19
Cytisus scoparius
2650439658 68c7e7dda3 m
Common Toadflax 20
Linaria vulgaris
263732993 5c1ab129f9 m
Himalayan Balsam 21
Impatiens glandulifera
3785742519 30dc962fd2 m
Common hemp-nettle 22
Galeopsis tetrahit
95714 orig
cheat grass 23
Bromus tectorum
Small
Reed Canarygrass 24
Phalaris arundinacea
Small
Foxtail Barley 25
Hordeum jubatum
4972450292 74a39c22d5 m
two-rowed stickseed 6
Lappula squarrosa
2576876827 6ba07937d3 m
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)

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