Seed & Plant Companies, some with online catalogs

United States:

• Abbott & Cobb, Inc., located in Pennsylvania
• The Abundant Life Seed Foundation, located in Washington
• Agrisales, Inc., located in Florida, a vegetable seed distributor
• American Seed Exchange, located in Wisconsin
• Atlas Seeds, Inc., located in California
• Baker Creek Heirloom Seeds, located in Missouri
• The Banana Tree Inc., located in Pennsylvania
• Baxter Seed Company, Inc., located in Texas
• The Bethlehem Seed Company, located in Pennsylvania
• W. Atlee Burpee & Co., based in Pennsylvania
• D.V. Burrell Seed Growers Co., located in Colorado
• Carolina Seeds, based in North Carolina
• The Cook's Garden, located in Vermont
• Corona Seeds, Inc., located in California
• Cyberseeds, located in Texas
• Dan's Garden Shop, located in Maryland
• Denali Seed Company, located in Alaska
• Eastern Native Seed Conservancy, located in Massachusetts
• Emerald Seed Company, located in California
• Ferry-Morse Seed Company, located in Kentucky
• The Garden Shop of the Thomas Jefferson Center for Historic Plants, located in Virginia
• Golden Valley Seed, located in California
• The Gourmet Gardener, located in Kansas
• The Great Petaluma Desert, sell succulents, located in California
• Grigsby Cactus Gardens, sell succulents, located in California
• H & H Seed Company, Inc., located in Arizona
• Harris Moran Seed Company, located in California
• J.M. Hartman & Daughters Seed Company, located in Indiana
• Hatcher Pecan &Seed Co., Inc., located in Georgia
• Hollar Seeds, located in Colorado, specialize in open pollinated and hybrid cucurbit breeding
• Heirloom Seeds, located in Pennsylvania
• Ed Hume Seeds, located in Washington
• Johnny's Selected Seeds, located in Maine
• J. W. Jung Seed Company, located in Wisconsin
• Ledden Brothers Inc., located in New Jersey
• Liberty Seed Company, located in Ohio
• New England Seed Company, located in Connecticut
• Matthew Newman's Old Time Seed Co., located in Minnesota
• Nichols Garden Nursery, located in Oregon
• Nicklow's Vegetables, Inc., located in Massachusetts
• Novartis Seeds Inc., Vegetables - NAFTA (formerly Rogers Seed Company), based in Idaho
• Ornamental Edibles, located in California
• P & P Seed Co., located in New York, specializing in giant vegetables, especially pumpkin
• Geo. W. Park Seed Co., Inc., located in South Carolina
• Peaceful Valley Farm Supply, located in California
• Pinetree Garden Seeds, located in Maine
• Plants for the Southwest and Living Stones Nursery, sell succulents, located in Arizona
• QualiVeg Seed Production, located in California
• Redwood City Seed Company, located in California
• Renee's Garden, based in Connecticut
• Sakata Seed America, Inc., located in California
• SBE—Southern Business Express, based in Mississippi
• Seeds of Change, located in New Mexico
• Seeds Blüm, located in Idaho
• Seed Dreams, located in California
• SeedWay, located in Pennsylvania
• Shamrock Seed Company, Inc., located in Texas
• Shepherd's Garden Seeds, located in Connecticut
• Siegers Seed Company, located in Michigan
• Southern Exposure Seed Exchange, located in Virginia
• Stokes Seeds, located in New York and Canada
• Sunseeds Co., located in California
• Territorial Seed Company, located in Oregon
• United Genetics Seeds Co., located in California
• Victory Seed Company, located in Oregon
• Virtual Seeds Company, located in Oregon
• Weeks Seed Company Inc., located in North Carolina, specialize in giant and unusual varieties
• Willhite Seed, Inc., located in Texas
• World Seed, located in California

Australia:

• Yates Vegetable Seeds Pty. Ltd.
• Tarrington Exotics

Canada:

• Centre jardin Hamel - Semences, located in Quebec
• Seed Centre, Inc., located in Alberta
• Stokes Seeds, located in Ontario and New York
• Vesey's Seeds, located in Prince Edward Island
• West Coast Seeds, located in British Colombia

China:

• Clover Seed Company Ltd., Hong Kong based, specialize in Cantonese vegetable seeds and others that are adapted to hot humid sub-tropical conditions, including bitter gourd.
• Tech-Spark Seed Co., Ltd., located in Benxi, Lioning, specilize in hybrid vegetable seed breeding, production and marketing, both domestic and international.

Denmark:

• Vikima Seed A/S

France:

• B & T World Seeds, located in France

Germany:

• Carl Sperling & Co.

India:

• Maharashtra Hybrid Seeds Company, Ltd. (commonly referred to as “Mahyco”), engaged in research, production, processing, and marketing of hybrid seeds
• Namdhari Seeds Pvt. Ltd., located in Bangalore

Israel:

• Zeraim Gedera

Italy:

• Anseme Srl
• ESASEM Spa
• Fratelli Ingegnoli Spa
• Larosa Emanuele Sementi

Japan:

• Tokita Seed Co., Ltd.

The Netherlands:

• Bejo Zaden BV, called Bejo Seeds, Inc. in California

South Africa:

• Starke-Ayres (Pty) Ltd.

Spain:

The VidaVerde Seed Collection

Thailand:

• Chia Tai Co., Ltd., located in Thailand
• East-West Seed Company, Ltd., established in Thailand, sister companies in the Philippines, Indonesia, Bangladesh and Vietnam.

United Kingdom:

• Exhibition Seeds
• Pro-Veg Seeds Ltd.
• 1) Doug and Vivi Rowland, caudiciform curcurbits
• 2) Doug and Vivi Rowland, caudiciform curcurbits

Seed Savers/Exchangers

• Cucurbyte Seed Swap of generally giant pumpkin seeds
• Native Seeds/SEARCH, based in the Greater Southwest U.S. and Mexico
• Seedsaving and Seedsavers Resources, provides links world-wide on seedsaving for seedsavers and those interested in heirloom and open-pollinated varieties of agricultural/horticultural plants and their genetic diversity
• Seed Savers Exchange, based in Iowa
• Seeds of Diversity Canada, Ontario