Each weed has two to three pictures in various seedling stages. Broadleaf weeds are categorized by cotyledon shape and grasses by ligule type. The feature which makes this book different from most other weed ID guides is the inclusion of a quick-reference section in the front of the book. Over 250 small thumb-nail pictures shows plants either as small seedling or mature plants. With each thumb-nail picture is included a reference in the book where the plant is described at all growth stages with technical information on germination temperature, seed dimensions, plant fertility, weed distribution, and control legislation.
Pictures shows several stages of the plant with seed and identifying features.
The book has 434 pages and contains more than 750 color photographs and 150 line drawings of 175 weed species from Alaska to Maine and northern California to Virginia. This interactive CD-ROM contains botanical descriptions, distribution maps and over 2,000 photographs of 362 weeds common to the continental U.S., Canada, and Alaska. Features include interactive quiz exercises in the tutorial, audio narration, plant family descriptions, grass collar illustrations, illustrated glossary, and ability to create and save your own presentations. A unique interactive visual key to identifying seedling grasses has been included. This program is a highly useful resource for field agronomists, consultants, extension agents, and for students in all types of courses in the agricultural and biological sciences.