Summit CWMA
Class 3 · Containment

Russian Knapweed

Acroptilon repensnow Rhaponticum repens

Widely spread. Effort goes to new or expanding populations; established stands are managed by whatever method the weed control authority approves.

Jun - Sep
Treatment window
Class 3
Utah designation
Russian Knapweed in the field

What we know

Class 3: containment

Widely spread. Effort goes to new or expanding populations; established stands are managed by whatever method the weed control authority approves.

Treatment on russian knapweed works best jun - sep. 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
Russian Knapweed
Scientific name
Acroptilon repens (now Rhaponticum repens)
Utah class
3 - Containment
Treatment window
Jun - Sep