Classified for credit

University arboretum and botanical garden with labeled plant collections — supports botany, plant taxonomy, and environmental horticulture.

Stanford University desert plant collection — covers arid and semi-arid plant adaptations, taxonomy, and Southwest ecology.

San Francisco Bay tidal marsh refuge with a multi-use trail — estuary ecology, bay conservation, and migratory shorebird habitat study.

Nature center and native plant park along the Feather River combining riparian ecology, native plant botany, and local cultural history.

Historic terraced rose garden with over 3,000 labeled rose varieties — supports plant taxonomy, horticultural science, and botanical classification.

Desert nature center in Joshua Tree's Black Rock Canyon — Mojave ecology, native flora and fauna, and high-desert geology.

Coastal wetland reserve along PCH supporting 300+ bird species — supports study of tidal ecology, migratory bird patterns, and Southern California estuary conservation.

Lake Merritt bonsai collection maintained by the Oakland Bonsai Society — supports plant biology, horticultural science, and the study of growth and form.

Iconic lath-and-glass botanical building in Balboa Park housing tropical and subtropical plants — plant taxonomy, botany, and ecosystem adaptation.

Sacramento-San Joaquin Delta state recreation area with wetland habitats and riparian ecosystems — covers California delta ecology, water systems, and native wildlife.

Coastal redwood state park with ranger programs — old-growth forest ecology, watershed science, and physical geography.

Outdoor living cactus collection in the Coachella Valley — covers desert plant biology, adaptations, and arid-climate ecology.

Visitor center for a state park protecting ancient giant sequoias — covers dendrology, old-growth ecology, and California natural history.

California-native plant botanical garden — covers plant taxonomy, Mediterranean ecology, drought adaptation, and conservation biology.

Bakersfield zoo and botanical garden focused exclusively on California native animals and plants — covers state ecology, wildlife biology, and conservation.

California state beach noted for its tide pools — marine biology, intertidal ecology, and coastal geology field study.

Orange County wilderness park with a staffed nature center and chaparral habitat trails — covers Southern California ecology, native species, and watershed science.

Valley oak riparian woodland state park along the Stanislaus River — Central Valley ecology, native oak biology, and freshwater habitat study.

Island conservancy nature center covering Catalina's endemic species and island biogeography — supports ecology, conservation, and island biology.

African big-cat exhibit at the Santa Barbara Zoo — supports zoology, predator ecology, and African savanna habitat study within a conservation program.

AZA-accredited municipal zoo on California's Central Coast — covers zoology, wildlife conservation, and animal behavior through close-range exhibits.

California state park on San Pablo Bay with trails through marsh and oak woodland, plus exhibits on 19th-century Chinese shrimping history.

Southern California state park with oak woodland and grassland trails — covers chaparral ecology, native plant identification, and watershed biology.

Municipal botanical garden with themed plant collections in California's Central Valley — covers plant biology, horticulture, and regional native flora.