Invasive & Non-Native Plants in Idaho
These non-native plants are among the most commonly recorded spreading in Idaho. Many crowd out the plants local wildlife depends on. The good news: there's a native you can plant instead.
Rush skeletonweed
4,021 sightingsChondrilla juncea · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Common mullein
2,251 sightingsVerbascum thapsus · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Canada thistle
1,649 sightingsCirsium arvense · non-native to the U.S.
Plant instead: Meadow thistle, Peregrine thistle, Palouse thistle (native Cirsium)
Scotch cottonthistle
1,479 sightingsOnopordum acanthium · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Cheatgrass
1,277 sightingsBromus tectorum · non-native to the U.S.
Plant instead: Smooth brome, California brome, Mountain brome (native Bromus)
Gypsyflower
1,224 sightingsCynoglossum officinale · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Redstem stork's bill
1,223 sightingsErodium cicutarium · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Yellow salsify
1,205 sightingsTragopogon dubius · non-native to the U.S.
Plant instead: Remarkable goatsbeard (native Tragopogon)
Climbing nightshade
1,144 sightingsSolanum dulcamara · non-native to the U.S.
Plant instead: Cutleaf nightshade, Carolina horsenettle, American black nightshade (native Solanum)
Leafy spurge
1,066 sightingsEuphorbia esula · non-native to the U.S.
Plant instead: Warty spurge, Horned spurge, Toothed spurge (native Euphorbia)
Spotted knapweed
949 sightingsCentaurea stoebe · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Bulbous bluegrass
891 sightingsPoa bulbosa · non-native to the U.S.
Plant instead: Nodding bluegrass, Sandberg bluegrass, Kentucky bluegrass (native Poa)
Crossflower
863 sightingsChorispora tenella · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Field bindweed
755 sightingsConvolvulus arvensis · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.
Diffuse knapweed
751 sightingsCentaurea diffusa · non-native to the U.S.
Plant instead: a Idaho native that fits the same spot.