Class 2 · ControlPriority species
Spotted Knapweed
Centaurea stoebe
Releases root chemicals that suppress the natives around it, then holds the ground it has taken. Seed travels on tires, boots and hooves, which is why it turns up first along roads and trailheads.
- Jun - Aug
- Treatment window
- Class 2
- Utah designation
What we know
Class 2: control
Established in varying populations statewide, at a concentration where control or eradication may still be possible. High priority.
Treatment on spotted knapweed works best jun - aug. A full profile for this species is still being written. Until it is here, the USU Extension field guide carries identification detail, and we would rather hear from you than have you guess.
At a glance
- Common name
- Spotted Knapweed
- Scientific name
- Centaurea stoebe
- Utah class
- 2 - Control
- Treatment window
- Jun - Aug
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