American Hosta Society
Midwest Regional Hosta Society
Hosta Library - Information and thousands of photographs of hostas
giboshi.com - List of
cultivars with cross reference: cultivar name, leaf size,
originator/nominator/introducer/registrant, hosta species.
American Hosta Growers Association A trade organization with information.
Bickelhaupt Arboretum - A fourteen acre outdoor arboretum of select, labeled trees, shrubs, ground covers, perennials and annual flowers located in Clinton, Iowa. (Current website U/A)