Peacock Horticultural Nursery (only open by appointment) - Sebastopol, California

No Nonsense Horticultural Services -

Plants Unlimited, Inc. - Castro Valley, California

The Garden Conservancy - San Francisco, California

McDonnell Nursery - Orinda, California

Devil Mountain Wholesale Nursery - San Ramon - San Ramon, California

University of California Cooperative Extension, Marin County - Novato, California

Van Winden's Garden Center - Napa, California

The Plant Queen - Berkeley, California

GardenCrafters Landscape & Design - Walnut Creek, California