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  • Knapweed Removal Information - How To Get Rid Of Knapweed . . .
    Gardeners are ever at the ready, waiting for an attack from the newest noxious weed - knapweed is no exception Knapweed removal can be time consuming and frustrating, but this article can help
  • Washington State Noxious Weed Control Board
    Spotted knapweed is a very aggressive species that can quickly infest large areas Knapweed infestations increase production costs for ranchers, degrade wildlife habitat, decrease plant diversity, increase soil erosion rate and pose wildfire hazards
  • Centaurea nigra - Wikipedia
    Centaurea nigra is a species of flowering plant in the family Asteraceae, and is also known as lesser knapweed, common knapweed, black knapweed and bell weed
  • How to Kill Knapweed: A Noxious Weed Found in Yards, Pastures . . .
    Knapweed is a noxious weed found in many places: yards, pastures and forests True control of this weed takes a few seasons Learn how to kill it here
  • Russian Knapweed - National Invasive Species Information . . .
    Russian knapweed (Rhaponticum repens) is a nonnative weed in the western United States It was introduced in the late 1800’s and is now invading and degrading cropland, rangeland, riparian areas, and roadsides This deep-rooted perennial is persistent and difficult and expensive to control by conventional means, is toxic to horses and outcompetes native vegetation by producing chemicals that
  • Diffuse and Spotted Knapweed | Colorado State University . . .
    Spotted knapweed is a short-lived, non-creeping perennial that reproduces from seed and forms a new shoot each year from a taproot Diffuse and spotted knapweed are readily controlled with herbicides Unless cultural techniques are used, however, the weeds will reinvade
  • Knapweed: Pictures, Flowers, Leaves Identification . . .
    Knapweed (Centaurea nigra) is wild, edible and nutritious food Identify knapweed via its pictures, habitat, height, flowers and leaves





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