American Hosta Society

Midwest Regional Hosta Society

Hosta Library - Information and thousands of photographs of hostas - 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)