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Thursday, September 02, 2010

Brown Spotted Knapweed

Spotted knapweed centaurea stoebe is an alien weed that originated from eastern Europe.  It is spread through most of the US and grows on dry soils.  It can displace native plants.  Insects used for biological control eat the head and roots of the plant. Very common in our area, especially along roadsides and fallow fields. 

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