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 Date: 2013-10-23 15:14:41Land management Curculionidae Biology Centaurea Diffuse knapweed Russian knapweed Weed Noxious weed Agapeta zoegana Invasive plant species Agriculture Garden pests |
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Knapweeds Bighead Centaurea macrocephala Black | New Invasive Plants of the Midwest Fact Sheet SPOTTED KNAPWEED Centaurea biebersteinii Description: Spotted knapweed is a short-lived perennial herb. First year plants form low-growing rosettes. It has flowering,DocID: 1pHQH - View Document |
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| Russian Knapweed Centaurea repens L. Identification: This perennial plant can grow up to 3 feet tall, erect, often in dense patches of upright single stems from widely spreading black roots which may go 8’ deep or moreDocID: HQKR - View Document |