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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 ...more ↓

bull thistle 1
Cirsium vulgare
ox-eye daisy 2
Leucanthemum vulgare
Fox-and-cubs 3
Hieracium aurantiacum
spotted knapweed 4
Centaurea stoebe micranthos
meadow hawkweed 5
Hieracium caespitosum
Creeping Thistle 6
Cirsium arvense
Mouse-ear Hawkweed 7
Pilosella officinarum
Narrow-leaved Hawk's-beard 8
Crepis tectorum
false dandelion 9
Hypochaeris radicata
Canada Hawkweed 10
Hieracium umbellatum
Tansy 11
Tanacetum vulgare
yellow salsify 12
Tragopogon dubius
Perennial Sow Thistle 13
Sonchus arvensis
Japanese knotweed 14
Fallopia japonica
Common Sowthistle 15
Sonchus oleraceus
White Sweet Clover 16
Melilotus albus
yellow sweet clover 16
Melilotus officinalis
garlic mustard 17
Alliaria petiolata
tufted vetch 18
Vicia cracca
hairy vetch 19
Vicia villosa
Scots Broom 20
Cytisus scoparius
Common Toadflax 21
Linaria vulgaris
Himalayan Balsam 22
Impatiens glandulifera
Common hemp-nettle 23
Galeopsis tetrahit
cheat grass 24
Bromus tectorum
Reed Canarygrass 25
Phalaris arundinacea
Foxtail Barley 26
Hordeum jubatum
two-rowed stickseed 6
Lappula squarrosa
Siberian peashrub 11
Caragana arborescens
European bird cherry 27
Prunus padus

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

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  • 26. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
  • 27. (c) Wendy Cutler, some rights reserved (CC BY)

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