WeedAlert.com Offers a weed listing for the United States regions, primarily weeds occurring in lawns.
The Garden of Paghat the Ratgirl Pacific Northwest gardener presents essays for hundreds of species growing in her garden, with personal notes, history, cultural information, and photos for each.
FloraFinder.com Offers links to gardening websites arranged by plant type, with a brief description of each site.
DenverPlants.com This resource for gardeners in the Denver metro area includes a sizeable database of plants with photos and cultural information.
Plants National Database 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.
HortiPlex Horticultural database with over 100,000 species and cultivars. Comments, ratings, and photos for many varieties supplied by members of the Gardenweb community.
Gardenline Guide to growing and caring for houseplants, vegetables, trees and shrubs. Also features common pests and a miscellaneous section. From the University of Saskatchewan Extension.
Fruits and Vegetables Extensive set of fact sheets and links from the University of Florida.
Horticopia On-line Plant Information Extensive directory of plants, categorized by genus, includes summary cultural information and small photograph for each plant.
Floridata Features hundreds of plant portraits, each illustrated with several photos, documenting the garden uses and cultural requirements of each species or cultivar.
Foliage Plants Database Searchable database with basic information and some photographs of plants grown primarily for their foliage. Japanese and English.
Gardenweb: Name That Plant Forum that allows users to upload images of plants that they are trying to identify.
Desert-Tropicals.com Features searchable database of thousands of plants, with basic information and often photos. Includes many succulents, herbs, and tropical fruit trees.
Plants For A Future 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.
New Jersey Weed Gallery Database of weeds, accessible by common and botanical names and by a thumbnail gallery. Summary information and photos are provided for each weed.
Shady Character Mark shares photos and descriptions with personal experiences growing a large number of shade plants, both perennials and woody specimens.
Virtual Plant Tags Database of detailed descriptions and growing tips for thousands of plants, including many not commonly grown. Profiles include cultural information, assessment of landscape value, and photos for most.
Tiscali Gardening A South African flower, plant and gardening portal with searchable plant database, photographs and information.
PlantBuzz Gardener Mark McDonough presents horticultural musings and illustrated plant studies, with particular emphasis on alliums and other bulbs for rock gardens.
Dinosaur Garden Plants 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 Flowers Descriptions of different types of flowers suitable for small gardens. Includes Phlox, Nasturtium, Lobelia Carnation, Zinnia, Alyssum, Begonia, and Dahlia.
SunnyGardens.com Plant encyclopedia featuring photos and short descriptions of annuals, perennials, shrubs, and trees.
ePlants Searchable database containing the results of Chicago Botanic Garden plant trials. Each entry contains a rating, photos, and cultural information.
Gardening Passion Weblog-style source of information on various garden plants, fruits, and vegetables. It is the English-language companion to the French aujardin.info.
PlantZAfrica Extensive information about plants native to southern Africa, including hundreds of alphabetically arranged plant portraits, by the National Botanical Institute of South Africa.
Findmeplants.co.uk 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.
Flowers of India Collection of hundreds of plant photos with brief descriptions. Each of the plants grows in India, but both natives and non-natives are featured.
Garten.cz Features a searchable, multilingual garden plant encyclopedia, with a summary of cultural and botanical information and in many cases photos.
