Spotted Knapweed
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Spotted Knapweed
Asteraceae (Sunflower Family)
Class A Weed
Spotted Knapweed Management
Description:Spotted knapweed is a simple perennial with a nonbranching root system. Both basal and stem leaves are divided; the basal rosette leave of the first year's growth are deeply lobed. Pinkish purple, sometimes cream-colored flowering heads are borne at the end of branches. Floral bracts are stiff and have a dark, comblike fringe, giving the appearance of spots. Bracts have obvious vertical veins below the tipped area and a reduced central spine.
Origin:Europe and Asia
Key Characteristics:
- Simple perennial
- Spotted bract with vertical veins and without a dominant central spine
Distribution: The distribution of this plant is not completely understood because new populations are identified each year. An aggressive competitor, spotted knapweed will displace desirable vegetation in all areas including rangeland, meadows, pastures, wildlife habitat, and recreational areas.
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