The San Diego Botanic Garden Foundation operates from its home at the San Diego Botanic Garden in Encinitas, California—not in San Diego proper, despite the name.
Address: 300 Quail Gardens Drive, Encinitas, CA 92024
Distance from Downtown San Diego: ~25 miles (35-45 min drive north on I-5)
Size: 37 acres
Collections: 5,300+ plant species/varieties across 29 themed gardens
Highlights: Hamilton Children's Garden (largest interactive kids' garden on West Coast), Bamboo Garden (largest public bamboo collection in NA), Desert Gardens, Tropical Rainforest, Subtropical Fruit Garden, Mediterranean Climate Gardens, Native Plant Gardens.
The Foundation (501(c)(3)) supports the garden through fundraising, membership, grants, and advocacy. The garden itself is operated by the City of Encinitas in partnership with the Foundation.
Hours: 9 AM - 5 PM daily (closed Christmas)
Admission: $18 adults, $12 seniors/students/military, $10 children 3-17, free <3
Membership: Starts $65/year (free admission, reciprocal privileges at 300+ gardens)
Encinitas' coastal Mediterranean climate (Zone 10b) enables this extraordinary botanical diversity—one of North America's finest gardens, quietly nestled in a beach city.