Compilation of details on the family, including annuals, perennials, trees, and shrubs. Looks at botany, propagation, articles, and gallery.

Presents flowers available for the season in a variety of colors, height, light requirements and other special attributes, as well as how-to articles and other gardening products.

Shares source of name, propagation, spacing, planting season, location, soil preparation, planting depth, and links to forcing bulbs.

Provides links for gardening enthusiasts. With reviews, ratings, blogs and ordering tips.

Provides an alphabetized listing of flora used in the landscaping industry. Developed by the Department of Horticulture of Oregon State University.

Features the national repository of names, symbols, distribution, species, characteristics and images for the US and its territories.

Describes the offerings of the resource center for rare, medicinal and edible vegetation. With links to databases.

Highlights the activities of the organization that is responsible for educating people on the benefit of plants in the workplace.

Provides information on native plant species in the United States. Features care instructions, fact sheets, and plant nutrient information.

Official government database of plants featuring photos, and information.

Alphabetical plant list provides growing guidelines for various species, as well as dealing with pests, diseases, problems, dividing, and pruning.

Database of commonly found weeds broken down by area of origin.

Provides information on the organization dedicated to the use of native plants for landscaping. Includes history, objectives, events calendar and publications.