Diffuse Knapweed (Centaurea diffusa)

Diffuse Knapweed (Centaurea Diffusa)
Credit: Christian Fischer. | Own picture, made in north-eastern Lower Saxony, Germany. | License: PD USDA

Centaurea Diffusa, or more commonly know as Diffuse Knapweed, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) of the genus Centaurea. Its duration is annual which means it grows for one season only. Centaurea Diffusa or Diffuse Knapweed's floral region is North America US Lower 48, specifically in the states of Arizona, California, Colorado, Connecticut, Iowa, Idaho, Illinois, Indiana, Kentucky, Massachusetts, Michigan, Missouri, Montana, Nebraska, New Jersey, New Mexico, Nevada, Ohio, Oregon, Tennessee, Utah, Washington, Wisconsin and Wyoming.

  • Category: Dicot
  • Genus: Centaurea
  • Family: Asteraceae
  • Order: Asterales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Annual Perennial
  • Growth Habit: Forb/herb
  • Native Status: L48 (I) CAN (I)
  • State Noxious Status: AZ (PNW RNW) CA (AW) CO (BW) ID (NW) MT (CAT1) ND (NW) NE (NW) NM (CAW) NV (NW) OR (BDW Q) SD (RNPS) UT (NW) WA (CBW NWSPQ) WY (NW)
  • State Noxious Common Name: AZ (diffuse knapweed) CA (diffuse knapweed) CO (diffuse knapweed) ID (diffuse knapweed) MT (diffuse knapweed) ND (diffuse knapweed) NE (diffuse knapweed) NM (diffuse knapweed) NV (diffuse knapweed) OR (diffuse knapweed) SD (diffuse knapweed) UT (diffuse knapweed) WA (diffuse knapweed) WY (diffuse knapweed)
  • PLANTS Invasive Status: STATE WSWS

Browse Plants by State

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