Priority: - Contain
Heavily branched plants from 1-1.5 meters in height. Has a single main-stem that divides into bushy, spreading branches on a mature plant. (Think of a 'tumbleweed').
Leaves are deeply lobed, hairy, grayish-green leaves. Form rosettes in their first year.
Small white, pink or purple flowers atop spiny bracts
Spotted knapweed is a biennial plant that reproduces by seed.
Habitat & Ecology
Found on dry roadsides, gravel pits, disturbed sites, and in fields
Displaces native and agricultural plants, reduces forage quality and quantity for livestock, contaminates crops, and creates a fire hazard.
Hand-pulling can be effective to eradicate new, small patches. Several herbicides are effective on seedlings, rosettes and mature plants. Several biocontrol agents have been released in the Mainland/Coast Region for this species, which are monitored by the Ministry of Forests and Range.