- Conejo Orchid Society, Thousand Oakes, CA
- Diablo View Orchid
Society, East San Francisco Bay Area, CA
- Five Cities Orchid
Society, Arroyo
Grande, CA
-
Gold Coast Cymbidium Growers
, San Mateo, CA
-
Long Beach Amateur Orchid Society, Long Beach, CA
- Malibu Orchid
Society, Malibu CA
- Malihini Orchid
Society, Cupertino,
CA
- Napa Valley Orchid
Society, Napa,
CA
- Newport Harbor
Orchid Society,
Irvine, CA
- Orange County
Branch CSA, Orange,
CA
- Orange County
Orchid Society, Orange, CA
- Orchid Society of California, Oakland,
CA
-
Orchid Society of Santa Barbara, Santa Barbara, CA
- Orchid Society of
Southern California,
Burbank, CA
- Palomar Orchid Society, Carlsbad, CA
- Peninsula Orchid
Society, San Mateo,
CA
- Riverside/SB Counties Orchid Society, Redlands, CA
- Sacramento Orchid
Society, Sacramento,
CA
- San Diego County
Orchid Society, San
Diego, CA
- San Francisco
Orchid Society, San
Francisco, CA
- San Gabriel Valley
Orchid Hobbyists,
Arcadia, CA
- Santa Clara Valley
Orchid Society, San
Jose, CA
-
Sonoma County Orchid Society, Santa Rosa, CA
- South Bay Orchid
Society, Palos Verdes Penninsula, CA
- South Coast Orchid Society, Seal Beach, CA
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