Rock Garden Societies
- NARGS - North American Rock Garden Society National Site [Canada, USA]
- AGS - The Alpine Garden Society [UK]
- SRGC - Scottish Rock Garden Club [UK]
Plant-oriented Societies and Pages
- American Hemerocallis Society; Illinois, Indiana, Michigan, Ohio, Wisconsin Pages
- American Hosta Society; Great Lakes Region
- American Iris Society
- American Rhododendron Society
- The Crocus Pages
- The Fritillaria Group of the AGS
- International Bulb Society [as of 21 Mar 2016, seems defunct so see the WikiPedia entry]
- Michigan Regional Lily Society
- The Pacific Bulb Society
- Wild Ones; Ann Arbor Chapter
Plant Sources
- Arrowhead Alpines [Fowlerville, MI 48836]
- Wrightman Alpines [Kerwood, ON Canada N0M 2B0]; Harvey's Blog; Esther's Blog
- Gee Farms [ Stockbridge, MI 49285-9405]