Catagory 1

diffuse knapweed

Centaurea diffusa

ASTERACEAE (Sunflower family)

— annual, biennial or short-lived perenial

IDENTIFYING CHARACTERISTICS

  • Much-devided, "cobwebby" basal leaves
  • Generally white flowers
  • Triangular, spine-tipped bracts

This is a general table provided as a quick reference only. Treatments behave differently in different ecosystems.
What works in some areas of montana may not work in others. These treatments may also affect native and desirable plants.

diffuse knapweed

cut mow
hand pull (wear gloves)
herbicide
biological control
reseeding
domestic animal
cultivate

effective

moderately effective-
effective in combination with other treatments
ineffective

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