Sells a variety of Dutch Holland bulbs including tulips, begonias, peony, lily, gladiolus, daffodils, hyacinths, and narcissus. Offers planting schedule, tips, and catalog.

Bulbs, collections, and tools for purchase. Planning guide, newsletter registration, and catalog request.

Producer of caladium bulbs in Florida. Illustrated catalog organized by color and habit. Site includes tips on cultivation and bulb storage.

Dahlia grower in Washington state ships tubers in April and May. Online catalog with photos.

Dutch grower of amaryllis, tulips, and alliums. Illustrated online catalog. Site primarily aimed at UK customers, but will ship elsewhere.

California dahlia grower offering hundreds of varieties. Online photo catalog, and information about the company and dahlias.

Bulb nursery in southern France, specializing in bulbs suitable for mediterranean climates. Searchable catalog with information and photo for each variety. Ships worldwide.

…cular specialization in lobivia and rebutia species. Online catalog, care instructions, photo gallery. Based in Sweden.…

Specialist grower in the UK offers seed for sweet peas and other Lathyrus species. Catalog with photos of some varieties, printable order form.

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.

Offers seeds for a variety of seeds for tropical garden and house plants. Colorful catalog (PDF download) has photos along with descriptions and cultivation information.

Offers certified organic seeds and food, plus tools, books, and gifts available through online catalog.

Organic fruits and vegetables, organic seed catalog and heirloom tomato seeds available from Windmill Point Farm near Montreal, Canada

Direct from working wildflower seed farm. Available in large quantities or small packets, free wildflower reference guide and seed catalog.

Small business in Georgia selling native plant seed from an online catalog of over 100 species, most with photos and brief germination instructions.

Online catalog includes orchid photos and descriptions updated monthly. Cultural tips and links to other sites included.

Online catalog features Paphiopedilum, Cattleya, Phalaenopsis and Bulboyphyllum orchid plants.

Online catalog specializing in Masdevallia, Miltoniopsis, Odontoglossum and Paphiopedilum orchids. Most plants are hybrid crosses or species grown from seed.

Seedlings to blooming size species and hybrid plants. Downloadable catalog available.

Grower and exporter of live orchids and exotic plants in Ecuador. Photo catalog, along with information and photos about orchids in Ecuador.