Appalachian Seeds
North Carolina sellers of organic seeds for a variety of heirloom and open pollinated vegetables, herbs and flowers.
Brother Nature
Specializing in organically grown, open pollinated flower, vegetable and herb seeds.
Elixir Farm
Organic and biodynamically grown Chinese and North American medicinal plant seeds.
Genesis Seeds, Ltd.
Based in Israel, Genesis is a large producer of certified organic seeds of flowers, culinary herbs, medicinal herbs and vegetables.
Greta's Organic Gardens
Organically grown seeds, open-pollinated, heritage, vegetable, flowers, and herbs.
Horizon Herbs
Organically grown medicinal herb seed of echinacea, goldenseal and 400 other species of plants.
Natural Gardening Company
They sell certified organic seeds and plants, including heirloom tomatoes.
Ready to Grow
UK site providing a range of unusual organically grown chilli (chile) seeds, and some non-organic exotic ornamentals including banana seeds and palm seeds.
Salt Spring Seeds
Promoting self-empowerment by providing untreated heirloom and heritage seeds to grow high-protein, good yielding, and great tasting crops.
Seeds of Change
Offers certified organic seeds and food, plus tools, books, and gifts available through online catalog.
Southern Exposure Seed Exchange
Seed-saving organization offers many varieties of heirloom and other open-pollinated vegetables that grow well in the southeastern U.S.
Terra Edibles
Since 1992. Open-pollinated, heirloom seeds, organically produced. Offers tomato, vegetable, herb, flower, and sweet pea seeds.
Tomato Fest
Northern California seller of over 400 varieties of organic heirloom and open-pollinated tomato seeds. Also offers tomato related books, supplies, and gift items.
Tomatsidan
Organically grown tomato seeds from Sweden. There is an English list on the site, but most is in Swedish.
Two Wings Farm
Small Canadian family farm offers Certified Organic gourmet and heirloom seed. Specializing in tomatoes and salad greens suited to the shorter season.
Wild Garden Seed
Sellers of Certified Organic heirloom and other open-pollinated seed varieties adapted for the Pacific Northwest.
Windmill Point Organic Farm
Organic fruits and vegetables, organic seed catalog and heirloom tomato seeds available from Windmill Point Farm near Montreal, Canada