Article by North Carolina State University extension provides an overview of types and cultivars, indoor and outdoor culture, propagation notes, and disease problems.

Fact sheet from the University of Nebraska extension covering classification, indoor and outdoor care, propagation, and pests. Diseases are covered extensively, with tables describing symptoms and control methods.

Offers categorized links to organizations and websites dedicated to the cultivation of geraniaceae.

Article with tips on overwintering tender geraniums, from the North Dakota State University extension.

One gardener's experiences growing scented leaf pelargoniums.

Society for amateur and professional growers of plants in the geraniaceae family, with an emphasis on pelargoniums. Overview of the society, its publications and events, classification, and affiliated organizations.