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Spotted Knapweed
Centaurea maculosa
 
Rosette

The rosette leaves are deeply lobed and may be six inches in length.
Adult

Spotted knapweed is a short-lived perennial one to three feet tall. The stems are moderately leaved.
Flower

Flowers are typically pink with spots on the flower bracts. Bloom is in early summer.
Weed Infestation

Originally found in Eurasia, spotted knapweed infests rangeland, pastures, roadsides, or any disturbed soils. Knapweed's release chemical substances into the soil that inhibit the growth of competing vegetation.
Flower bracts

Flower bracts have black tips.
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