This impressive, richly illustrated field guide identifies more than 150 noxious weeds and another 100 related species. Color photos show the weeds at five critical stages, including their appearance as seedlings. The book covers a region from southern Oregon east to Connecticut and north to Canada. Information on weed legislation by state is listed. A first of its kind, University of Alberta Extension this extraordinary book is for a multitude of users, whether farmer, landscaper or gardener.