Offers a weed listing for the United States regions, primarily weeds occurring in lawns.
Translation program for botanical Latin.
Pacific Northwest gardener presents essays for hundreds of species growing in her garden, with personal notes, history, cultural information, and photos for each.
Offers descriptions, illustrations, and identification retrieval.
Plant encyclopedia featuring photos and short descriptions of annuals, perennials, shrubs, and trees.
Information and how-to articles on a variety of plant topics by Angela England and other contributors.
Directory of web pages about plants, selected for their interest to gardeners. Primarily organized by botanical classification.
Project to categorize plants by their flower color, as well as a variety of horticultural tags. Draws from a substantial photo database, with brief description and cultural details for each selection.
Resources about toxic plants from the Veterinary Medicine Library.
Online USDA database of botanical information, images, and links on plants in the USA, including crops and invasives. Search by name, geographic distribution, or other characteristics.
Resource centre for rare and unusual plants, particularly those which have edible, medicinal or other uses. Offers a plant database, and various articles on gardening, perennials, and habitats.
Includes information about plants native to southern Africa, including hundreds of alphabetically arranged plant portraits, by the National Botanical Institute of South Africa.
Gardener Mark McDonough presents horticultural musings and illustrated plant studies, with particular emphasis on alliums and other bulbs for rock gardens.
Plant selector tool for Australian gardeners, offering suggestions based on gardening conditions and preferences.
Database on plant identification, culture and usage for the U.S. Northwest, including native and introduced species and their major varieties and cultivars.
Database of weeds, accessible by common and botanical names and by a thumbnail gallery. Summary information and photos are provided for each weed.
Plant and flower identification: users upload pictures of unknown plants. Site members identify them and score points for correct answers.
Manual of subtropical landscaping plants prepared by Palm Beach State College. Searchable database of Florida native and exotic plant species, with information on uses, horticultural characteristics, and photographs.
Plant information database, including photographs, Latin name pronunciations. Searchable by botanical and common names, and plant characteristics.
Chicago Botanic Garden provides a database of recommended plants for Illinois gardens, from perennials to trees, with photos and information on their culture and use.