Bright yellow 3-4" across thistle-like flowers enclosed in glossy, light brown bracts on strong, stiff stems. Blooms for 2-3 weeks in the mid-summer. Sometimes commonly called globe centaurea or yellow hardhat. Good cut and dried flower.
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www.mobot.org/gardinghelp/plantfinder/plant.asp?code=N7...
www.mobot.org/gardinghelp/plantfinder/plant.asp?code=N760
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Learn about Centaurea macrocephala ( Giant knapweed ) and see photos with detailed growing and plant information. Could Centaurea macrocephala ( Giant knapweed ) be the next plant for your home? Visit one of the World's largest plant encylopedia and garden store. ... C. macrocephala is a perennial with a clump-forming habit.
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www.backyardgardener.com/plantname/pda_c164.html
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A PLANTS profile of Centaurea macrocephala (bighead knapweed) from the USDA PLANTS database ... Centaurea macrocephala Puschk. ex Willd. bighead knapweed; ... Images: Centaurea macrocephala Puschk. ex Willd.
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plants.usda.gov/java/profile?symbol=CEMA9
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Centaurea macrocephala is available at Digging Dog Mail Order Nursery ... Equally at home in a present day border or a more naturalized setting, our hardy undemanding selections paint a bright picture inside as well. The long lasting boisterous blooms are celebrated ... Centaurea macrocephala (P-0834); Each $6.00; Add to Cart...
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www.diggingdog.com/pages2/plantpages.php/P-0834
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Allows dealers and customers of perennials and plants to view information. ... December 26, 2009 ... Heritage Perennial Profile...
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www.perennials.com/seeplant.html?item=1.125.100
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Centaurea macrocephala plants for sale, basket flower plants, plants of basket flower, plants for sale, perennials, perennial plants for sale. Very reasonable prices on seeds and plants. Seeds/plants of usual and unusual varieties, perennial and annual. ... Main Plants Page ... ; Flower Color: Yellow; Height: 30" to 36";
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www.tsflowers.com/html2/centaurea_macrocephala.html
www.tsflowers.com/html2/centaurea_macrocephala.html
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Information about Washington's noxious weeds. ... : Bighead knapweed, Centaurea macrocephala, is a member of the thistle tribe (Cynareae) in the sunflower family. This perennial species is the tallest knapweed growing in the Pacific Northwest, ranging from two to five feet tall, depending on the habitat.
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www.nwcb.wa.gov/weed_info/Written_findings/Centaurea_ma...
www.nwcb.wa.gov/weed_info/Written_findings/Centaurea_macrocephala.html
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Bighead Knapweed; Centaurea macrocephala; ... General Description: Tallest knapweed in Washington State, reaching 2 - 5 feet in height. ... lance shaped with toothed edges and pointed tips...
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www.nwcb.wa.gov/weed_info/Centaurea_macrocephala.html
www.nwcb.wa.gov/weed_info/Centaurea_macrocephala.html
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[See Page for Genus Centaurea] [List All Plants in this Genus] ... Genus: Centaurea ... Add your comments and/or image on Centaurea macrocephala...
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hortiplex.gardenweb.com/plants/p1/gw1008873.html
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