The Orchid Society of California (OSC), Inc. and You


We are a 501(c)(3) nonprofit, horticultural organization striving to promote and maintain public and scientific interest in the research, preservation, development, and distribution of orchids in the world.

We bring together home and commercial growers in the San Francisco Bay Area who are interested in the culture and propagation of orchids. Founded in 1937, we are the first and the oldest orchid society west of the Mississippi.

Orchid lovers like you are growing plants on windowsills, greenhouses, indoor light gardens, and in the outside.

We publish a monthly newsletter. As a member, you’ll be among the first to find out about recently discovered species, the latest hybrids, and the latest culture techniques. Please join us to meet new friends who share your excitement in growing these wonderful plants. We look forward to sharing with you our experiences.

During our monthly meetings, the American Orchid Society (AOS) provides cultural sheets and judging events. You can see the outstanding species and hybrids being submitted for judging. We encourage you to submit your plants.

Please join us at a monthly meeting to meet new friends, listen to presentations, check out the great variety of orchids being displayed in our Show and Tell Table, purchase plants, or win them in the raffles!

Our meetings are held on the 3rd Monday of each month at the Lakeside Park Garden Center, 666 Bellevue Drive (by Lake Merritt), Oakland, California, at 7:30 PM; orchid entries for AOS judging are from 7:00 pm to 7:30 pm.