California Native Grass Association (CNGA)
Promotes and restores California native grasslands.
P.O. Box 72405
Davis, CA 95617
(530) 759-8458

California Native Plant Society (CNPS)
Open to all native plant lovers. Membership benefits include subscriptions to the Bulletin and Fremontia, as well as publications produced by local chapters.
1722 J Street, Suite 17
Sacramento, CA 95814
(916) 447-2677

Friends of the Regional Parks
The Regional Parks Botanic Garden includes plants native to many communities in California. Membership benefits include subscriptions to Four Seasons and Manzanita.
Regional Parks Botanic Garden.
c/o Tilden Regional Park
Berkeley, CA 94708-2396

Society for Pacific Coast Native Iris
The society seeks to increase awareness and appreciation of this native plant.
(707) 964-3907