The Hosta Library
Contains photos and information on a large number of hostas.

American Hosta Society (AHS)
The AHS is a non-profit organization organized exclusively for educational
and scientific purposes, and especially to promote, encourage, and foster the development
and improvement of the genus Hosta and public interest therein.

HostaSports.com
HostaSports.com is dedicated to the collection and dissemination
of information about hosta sports.

Giboshi.com
A listing of hosta cultivars with an extensive cross reference.