American Fern Society
Information on the biology and cultivation of ferns; activities of the society including a spore exchange and publication of Fiddlehead Forum, American Fern Journal, and Pteridologia.
Cold-hardy Tree Ferns
Well illustrated site that describes cold-hardy tree ferns and their cultivation in cool climates.
Hardy Fern Foundation
A club established to develop a comprehensive collection of the world's hardy ferns for display, testing, evaluation, public education, and introduction for gardening and horticulture.
Los Angeles International Fern Society
Information about the society's activities, ferns, and fern allies.
San Diego Fern Society
Information on fern culture and the activities of the society plus lists of books and experts.
Staghorn Ferns for Florida
University of Florida provides general details on the plant including lighting, watering and fertilization.
Texas Gulf Coast Fern Society
Introduction, events, and links to other societies and sites of pteridological interest.