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Scientific Name
Centaurea diffusa Lam. (ITIS)
Common Name
Diffuse knapweed, white knapweed, spreading knapweed, tumble knapweed
Synonym
Acosta diffusa (Lam.) (ITIS)
Native To
Eastern Mediterranean region (Winston et al. 2012)
Date of U.S. Introduction
1800s (Wolfson et al. 2005)
Means of Introduction
Introduced accidentally through contaminated seed (Zouhar 2001)
Impact
Reduces agricultural yields and forage values; crowds out native species (Winston et al. 2012)
Diffuse knapweed, flowers
Credit
USDA APHIS PPQ, Oxford, North Carolina
Source
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Citations
Integrated Taxonomic Information System. Centaurea diffusa. [Accessed Sep 10, 2014].