The following is a list of organizations working locally and internationally to save heirloom garden seeds and offering a large selection of those seeds for sale. Some include additional glossaries and gardening instructions.

Seed Savers Exchange

Sow True Seed

Southern Exposure Seed Company

Common Wealth Seeds

Saving Our Seeds Project

NCAT – National Center for Appropriate Technology

ATTRA – National Sustainable Agriculture Information Service

Organic Seed Finder

AOSCA – Association of Official Seed Certifying Agencies

Basic Seed Saving

International Seed Saving Institute