 | Cal Pacific Orchid Farm ENGLISH
Selection of orchids (including species), designer orchid arrangements, mounted plants, and orchid boarding services offered. Established in 1976. Encinitas, California, USA.  |
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| Cal-Orchid ENGLISH
Selection of orchids offered. Culture notes. Santa Barbara, California, USA. |
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| California Orchids ENGLISH
Orchid boarding facilities in the San Francisco Bay area. Bi-annual orchid sale. Greenhouse design consulting. Mary Nisbet. Bolinas, California, USA. |
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 | California Sierra Nevada Judging Center ENGLISH
Serving the Central Valley of California and Northern Nevada. Judging schedule, documents, and awards index including photos and descriptions. Sacramento, California, USA. |
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 | Calypso Orchid ENGLISH
Blog by "calypsogrower" covering many topics about the orchid genus Calypso. California, USA. |
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| Calypso Orchid Company ENGLISH
Site dedicated to Calypso bulbosa. Seed is offered for sale. Philo, California, USA. |
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| CalypsoLip JAPANESE / ENGLISH
Photos of wild orchids (and birds) found in Japan. |
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| Cameleon Orchidee DUTCH / GERMAN / FRENCH / ENGLISH / SWEDISH
Three nurseries (De Vreede, Fransen, Geest) producing a selection of orchids for sale in Europe. Based in the Netherlands. |
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| Camp Lot A Noise Tropicals ENGLISH
Specializing in orchid species and supplies. Culture notes. Photos. Karen and Jerry Sellers. Sarasota, Florida, USA. |
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| Camp One Orchids ENGLISH
Specializing in Disas with a selection of other genera offered. USA distributor for Supersphag (sphagnum moss from New Zealand). Waldport, Oregon, USA. |
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| Canadian Orchid Congress ENGLISH / FRENCH
The COC is an association of orchid societies in Canada promoting the cultivation of orchids through hybridizing, exhibition, publications, conservation, lectures, and seminars. |
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| Canaima Orchids ENGLISH
Specializing in clones of Cattleya and Laelia species. Image gallery of Cattleya habitats in Venezuela. Ellenton, Florida, USA. |
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| Candi Orchids INDONESIAN
Orchid news, culture notes, photos, contests, and more, in blog format. Semarang, Central Java, Indonesia. |
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| Cape Fear Orchid Society ENGLISH
Membership and activity information. Growing tips and show table results. Wilmington, North Carolina, USA. |
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| Cape Orchid Society ENGLISH
Striving to bring those together who are interested in orchids. The oldest orchid society in South Africa, founded in 1957. Cape Town, South Africa. |
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