An easy-to-use, wide-ranging guide to invasive plants in North America. Features full-color photos and descriptions of more than 250 alien species—both terrestrial and aquatic—that are in some cases changing the landscape to an almost unimaginable degree. Accompanying text describes the plant's environmental and economic impacts as well as management techniques used to control it. Also includes an explanation of what an invasive is and a step-by-step identification key. An essential guide to understanding this unprecedented environmental challenge. The degree to which invasive plants harm ecosystems remains surprisingly controversial, but the data are clear. Invasive plants are ecological tumors that degrade food webs wherever they go. The third edition of Invasive Plants expands the treatment of non-native plants that are already invasive in North America and warns us about species that are poised to become invasive. This is an invaluable reference for this important subject, even if you already own an earlier edition! -- Douglas Tallamy, author of Bringing Nature Home and Nature's Best Hope Sylvan Kaufman consults, writes, and teaches on ecology, botany, and restoration topics through her business, Sylvan Green Earth Consulting. She lives in Santa Fe, New Mexico. Wallace Kaufman is a science writer and author of several popular nature books, including Grow Old and Die Young , Coming Out of the Woods (978-0-7382-0488-8), No Turning Back (978-0-595-00099-9), and The Beaches Are Moving (978-0-8223-0574-3). He lives in Newport, Oregon.