diffuse knapweed USDA PLANTS Symbol: CEDI3
USDA ARS GRIN: 104125
ITIS: 36958
NAPIS: PBFARBC
Centaurea diffusa Lam.
Taxonomic Rank: Magnoliopsida: Asterales: Asteraceae
States Listed: Nevada, Utah,
Synonym(s): white knapweed
Diffuse knapweed is an annual, biennial, or short-lived perennial that is 8-40 in. (20-101.6 cm) tall. The basal leaves are lobed and stalked. The leaves become sessile, smaller, and less divided as they move up the stem. Flowering occurs from July to September, when white flowers develop in urn-shaped heads, in clusters, at the ends of the branches. The heads are subtended by leathery bracts. The lower and middle bracts have brown margins with spreading spines at the tips. Diffuse knapweed is native to southern Europe and north central Ukraine and prefers well-drained soils, roadsides, gravel pits, pastures and trails.

Identification, Biology, Control and Management Resources


Distribution Map
  • cluster Multiple Points
  • point Single Point
Please wait - loading data
Center Latitude:
Mouse Latitude:
Click Latitude: 		Center Longitude:
Mouse Longitude:
Click Longitude:

Bugwood Center Developed by The University of Georgia - Center for Invasive Species and Ecosystem Health.
Last updated on Thursday, February 14, 2013 at 02:47 PM