Orange County Botanical Gardens

Fuller Arboretum
http://arboretum.fullerton.edu
26-acre botanical garden with an ecologically arranged collection of plants from around the world, is located on the northeast corner of the California State University, Fullerton campus.

Hortense Miller Garden
22511 Allview Terrace, Laguna Beach, CA
The Hortense Miller Garden is a two and one-half acre garden open to the public for tours Tuesday through Saturday every day of the year. Hortense, at age 91, still greets visitors to this unique wild garden on a hillside above the Pacific Ocean in Laguna Beach, California.

Sherman Library & Gardens
www.slgardens.org
2647 East Pacific Coast Highway Corona del Mar, California 92625
2.2 acre Corona del Mar horticultural retreat.
The Gardens provide a museum of living plants, displayed amidst a setting of immaculate gardens, patios and conservatories linked together by wide brick walkways, beds blooming with seasonal flowers and bubbling tile fountains. The Library is a specialized research center devoted to the study of the Pacific Southwest.