Gardening community centered around a jointly edited database of plant species and varieties, with forums and blogs.

Features searchable database of thousands of plants, with basic information and often photos. Includes many succulents, herbs, and tropical fruit trees.

Describes plants that lived during the age of the dinosaurs, with brief information, lists, and links to other resources for plants of the mesozoic era.

Garden plant finder. Searchable by garden conditions and design requirements such as flower color, size and growth habit. Search results include plant photo and summary information.

Features hundreds of plant portraits, each illustrated with several photos, documenting the garden uses and cultural requirements of each species or cultivar.

Collection of hundreds of plant photos with brief descriptions. Each of the plants grows in India, but both natives and non-natives are featured.

Pacific Northwest gardener presents essays for hundreds of species growing in her garden, with personal notes, history, cultural information, and photos for each.

Plant database with search engine to find plant ideas according to location, design and lifestyle. Free membership gives access to online journal with folders, to-do's and notes.

Features a searchable, multilingual garden plant encyclopedia, with a summary of cultural and botanical information and in many cases photos.

Database on plant identification, culture and usage for the U.S. Northwest, including native and introduced species and their major varieties and cultivars.

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.

Plant encyclopedia featuring photos and short descriptions of annuals, perennials, shrubs, and trees.

Offers a weed listing for the United States regions, primarily weeds occurring in lawns.

Farmshelf's bookcase-sized smart