Weeds of North America

Many a gardener has cursed the vitality and versatility of weeds. But for every extra few hours of toiling they may cause the individual gardener, they reap millions of costs upon industries?from agriculture to landscape architecture to golf courses. In each of these settings, weeds compete for resources, often triumphantly; they provide new vectors for plant pathogens, and are also known for their natural irritation in the form of toxins, thorns, prickles, etc. In the state of California alone, it is estimated that weeds cause nearly $82 million dollars in damage a year.
This new version includes more species (275 primary species with an additional 225 species in the main text), additional common names, and new information such as seed viability, germination requirements, and Other Species of Concern. The guide includes identification keys that use thumbnail photos. Plant families are arranged by scientific name, and each family has a short description and image characteristic of the family. Within each family, the species are arranged alphabetically by scientific name. Each species treatment covers two facing pages, and will include text and 3?5 images

Richard Dickinson lives in Toronto and has taught plant taxonomy for more than twenty-five years. France Royer is a photographer living in Edmonton, Alberta. Together they are the authors of Wildflowers of Edmonton and Central Alberta, Wildflowers of Calgary and Southern Alberta, Weeds of Canada and the Northern United States, and Plants of Alberta.