Date: 2009-06-07 15:29:14Agriculture Hawkweed Noxious weed Centaurea Hieracium pilosella Pilosella aurantiaca Hieracium Tyrol Knapweed Diffuse knapweed Invasive plant species Asterales Asterids | | Help collect noxious weeds in Washington by Peter Zika, WNPS Central Puget Sound Chapter Noxious weeds vex Washingtonians. They hamstring farmers and ranchers, and trouble casual gardeners. Native plant and animal communAdd to Reading ListSource URL: www.wnps.orgDownload Document from Source Website File Size: 316,10 KBShare Document on Facebook
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