Comments by Wendy Rotchstein
The office that I work for (UC Cooperative Extension in Half Moon Bay)has a program of Master Gardener volunteers for San Mateo and San Francisco Counties. They have started gardens all over these two counties and they might have more information to help you start one here. They can be contacted on Mondays and Thursdays at 650-726-9059 x 107 or email [email protected]
I would love to help out too. Let me know what you find out!