| Amishland Heirloom Seeds: Pennsylvania source for organically grown seeds for tomatoes, eggplants, and peppers, as well as other common and rare vegetables, and some flowers. |
| Anioleka Vegetable Seeds: Over 100 varieties of heirloom tomatoes, as well as many varieties of eggplant, lettuce, cucumbers, peppers and other vegetables. |
| Aunt Martha's Garden: Offers a variety of heirloom garden seeds. Nonhybrid and open-pollinated. |
| Baker Creek Heirloom Seeds: Growers and suppliers of non-hybrid seeds. |
| Botanikka Seeds: Featuring rare and heirloom vegetable, herb and flower seeds, wholesale and retail sales. |
| Bountiful Gardens: Offering seed for untreated heirloom and open pollinated vegetables, flowers, medicinal and culinary herbs. No GE seeds. Also has information on growing biointensively and sustainably. |
| Diane's Flower Seeds: Open-pollinated and heirloom garden seeds, for perennials, annual flowers, hand-crossed daylily hybrids, and herbs. Site also offers a series of gardening articles. |
| Good Seed Company: Open pollinated, heirloom and homestead seeds especially adapted for Northern gardens. |
| Heirloom Acres: Grower and seller of heirloom vegetables and flowers. Bulk quantities available. |
| Heirloom Seeds: Sells non-hybrid vegetable, flower, and herb seeds. |
| Heirloom Tomato Seed Exchange: Australian collector, selling heirloom tomato seeds. |
| Heirloom Tomato Seeds: Heirloom tomato seeds available along with growing tips and recipes. |
| New Hope Seed Company: Growers and suppliers of open pollinated and heirloom vegetable and tobacco seeds. Includes a company profile and information about growing tobacco. |
| Seed Savers Exchange: Founded in 1975, this non-profit organization was a pioneer in the heirloom seed movement. Web site includes general information as well as an online catalog. |
| Seeds Trust: Offer heirloom, vegetable, wild flower and herb seeds to promote self-reliance and genetic preservation. |
| Select Seeds: Specializing in heirloom varieties of plants popular in the 19th century and before, particularly sweet peas. |
| The Cottage Gardener Heirloom Seed and Plant Nursery: Heirloom plant nursery specializing in historic perennials and annuals, traditional herbs, and heirloom vegetables. Offers only seeds by mail order. |
| The Victory Seed Company: Offers open pollinated and heirloom vegetable, herb, and flower seeds. Includes information about the farm in Oregon. |
| TomatoBob.com: Offers several hundred varieties of heirloom tomato and vegetable seeds. Site includes growing tips and a newsletter. |
| Underwood Gardens: Specializing in rare, heirloom seeds and endangered varieties of vegetables, herbs and flowers. |
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