This fully updated second edition of the best-selling Weeds of the Northeast provides lavish illustrations for ready identification of more than 500 common and economically important weeds in the Northeast and in the Upper Midwest and Mid-Atlantic states. This new edition covers the region south to North Carolina, north to Maine and southern Canada, and west to Wisconsin. This practical guide includes descriptions and photos of floral and vegetative characteristics, giving anyone who works with plants the ability to identify weeds before they flower. A broadened range and prevalence of important weeds in the Northeast, as well as the Upper Midwest and Mid-Atlantic United States Standardized species descriptions with a wealth of information in a condensed and comprehensive format-more than 200 new species accounts Easy identification through a dichotomous key, detailed descriptions, and images Comparison tables make it easy to differentiate between many closely related and similar species Weeds of the Northeast is a comprehensive reference book for those aspects of weed biology and ecology important to weed management. It will serve home gardeners and landscape managers as well as pest management specialists and allergists.