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Stan Shebs CC BY-SA 4.0 Wikimedia Commons

California Botanic Garden

Park

Located in Claremont, California Botanic Garden (formerly Rancho Santa Ana Botanic Garden) focuses on California native plants, with research collections, interpretive trails and seasonal events for plant enthusiasts.

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In this guide

California Botanic Garden essentials

Address: 1500 North College Avenue (approx.), Claremont, CA 91711
Website: calbg.org
Hours: Tue-Sun 9am-4:30pm, closed Mondays (hours may vary seasonally)
Admission: Adults $12, seniors/students reduced; free for children under 12 (check website for current rates)

About California Botanic Garden

The California Botanic Garden, located in Claremont, California, is a public garden and research institution focused on the flora native to California. It began as Rancho Santa Ana Botanic Garden in 1927 and was renamed in 2019.

Visitors encounter extensive displays of native California plant communities across themed gardens and walking trails, with signage and interpretive information about regional ecology. Spring is a particularly active season for wildflowers and vegetative display, and the garden supports research, education, and native-plant conservation efforts.

Founded in 1927 to cultivate and study California plants, the institution has grown from a regional botanical collection into a combined public garden and research center. The 2019 change of name to California Botanic Garden reflected an expanded public and statewide mission.

Situated in Claremont in eastern Los Angeles County at the edge of the San Gabriel foothills, the garden is accessible from the Los Angeles metropolitan area and serves as a regional center for native-plant horticulture and education.

  • Founding and focus: Founded in 1927 as Rancho Santa Ana Botanic Garden and renamed California Botanic Garden in 2019, it emphasizes the study and display of California native plants.
  • Research and seasonal interest: Hosts research and conservation programs in addition to public garden displays, with trails and seasonal interest strongest in spring wildflower months.

What to See#

  • Gardens and collections: Living collections and demonstration gardens focus on California native plants and ecological landscaping, arranged across themed garden beds and trails in Claremont.
When to Go

Best Time to Visit California Botanic Garden

Best in spring for blooms and autumn for fewer crowds; check greenhouse events year-round for special tours and plant sales.

Spring
March-May · 55-75°F (13-24°C)
Peak blooming for many California natives; gardens are at their most colorful.
Fall
September-November · 60-85°F (16-29°C)
Less crowded and still pleasant for walks; many late-blooming species and good light for photography.
Winter
December-February · 45-65°F (7-18°C)
Quieter, with greenhouse displays and a different palette of dormant woody plants.

Weather & Climate near California Botanic Garden

Climate

California Botanic Garden's climate is classified as Hot-Summer Mediterranean - Hot-Summer Mediterranean climate with warm summers (peaking in August) and cool winters (coldest in January). Temperatures range from 5°C to 33°C. Semi-arid with limited rainfall with a pronounced dry season.

Air Quality: AQI 38 Good
Temperature & Rainfall
Temperature Range
33°
Warmest Month
5°
Coldest Month
Monthly Conditions
Month Comfort Temp Feels Rain Sky Humidity Wind UV Daylight
January - 5° - 18° 12° 85 mm - - 2.7 m/s - -
February - 6° - 19° 13° 89 mm - - 2.9 m/s - -
March - 7° - 20° 14° 78 mm - - 3.2 m/s - -
April - 8° - 23° 16° 30 mm - - 3.5 m/s - -
May - 11° - 25° 18° 9 mm - - 3.6 m/s - -
June - 13° - 29° 21° 1 mm - - 3.5 m/s - -
July - 16° - 33° 24° 1 mm - - 3.2 m/s - -
August - 16° - 33° 25° 4 mm - - 3.0 m/s - -
September - 15° - 31° 23° 9 mm - - 2.8 m/s - -
October - 11° - 27° 19° 10 mm - - 2.6 m/s - -
November - 7° - 22° 15° 47 mm - - 2.6 m/s - -
December - 5° - 19° 12° 57 mm - - 2.5 m/s - -
Getting There & Around

How to Get to California Botanic Garden

The Garden is in Claremont, east of Los Angeles. From the 10 Freeway, exit at Mountain Ave (or use local streets through Claremont); parking is available on-site and in nearby lots. The Claremont Metrolink station is a 15-20 minute walk away.

Tips for Visiting California Botanic Garden

  • Visit the research greenhouse complex when docent-led tours are available to see rare and endemic California species.
  • Check the events calendar for seasonal plant sales and guided botanical walks focused on chaparral and native gardens.
  • Allow time for the Native Plant Garden and the Mediterranean collection-both are arranged by ecological community rather than aesthetic alone.