Iowa State Horticultural Society
- Promotes horticulture and has individual, business, and organization memberships. Activities, board of directors, select articles from previous issues of their quarterly magazine, scholarships, affiliated organizations, member application, retail partners
- http://www.iowahort.org/

Eastern Iowa Pond Society
- Membership details, pond showcase, newsletter, calendar and library list.
- http://www.eips.org/