Russian Knapweed

( Acroptilon repens, Rhaponticum repens )

Toothed and hairy base leaves; upper leaves small and narrow with a smooth edge
Blue-green leaves and stems
One purple to pink flower per branch with light pink to white tips on each flowerhead
Height 1 to 3 feet

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Type	Information
Toxicity	Toxic. Horses.
Control	Mechanical and herbicide. Contact your County Weed District or local Applicator for more information.
Habitat	Irrigation ditches, river corridors, forests, grasslands, roadsides, rangelands and pastures.
Root	Extensive root system.
Leaf Shape	Deeply lobed lower leaves, linear upper leaves.
Lifespan	Perennial; two years or longer.
Priority 2B Weed	Abundant in Montana and widespread in many counties.
Similar Looking Plants	Spotted knapweed, meadow knapweed and diffuse knapweed.
Important Information	Root system has a black, bark-like covering. Plant is allelopathic (inhibits growth of other plants) and develops dense stands due to its ability to out-compete resident vegetation.