Centaurea diffusa (Diffuse Knapweed) is a species of annual herb in the family Asteraceae. They have a self-supporting growth form. They are associated with freshwater habitat. They are native to Yugoslavia, Russia, Bulgaria, Turkey, Ukraine, Moldova, Eastern Mediterranean, Armenia, Italy, Romania, Georgia, Azerbaijan, Greece, and Syria. They have simple, broad leaves. Flowers are visited by Small Wood Nymph, Banded Hairstreak, Common Checkered Skipper, and Coronis Fritillary. Individuals can grow to 0.34 m.
EOL has data for 23 attributes, including: