Classified for credit

County-maintained arboretum with labeled tree collections — dendrology, plant identification, and urban ecology.

Bonsai collection at the Chicago Botanic Garden — covers horticultural science, plant physiology, and Japanese botanical art traditions.

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

Bonsai garden at Nichols Arboretum — covers plant biology, horticultural technique, and the cultural history of bonsai as an art-science practice.

Dedicated bonsai collection within Meadowlark Botanical Gardens — supports horticulture, plant biology, and the art of miniature tree cultivation.

Seasonal Halloween event at Louisville Zoo — wildlife biology and animal observation remain the educational core despite the themed overlay.

Public arboretum with labeled tree and plant collections — supports botany, dendrology, and local ecology studies.

Coastal Maine land trust preserve with trails and tidal access — covers coastal ecology, land conservation, and estuarine biology.

Urban butterfly garden in Knoxville supporting native pollinators — covers entomology, plant-pollinator relationships, and native habitat restoration.

Massachusetts state park with ponds, forests, and trails on former Ames family estate — supports freshwater ecology, New England natural history, and physical education.

Audubon-managed mountain sanctuary with hiking trails — covers bird biology, forest ecology, and wildlife conservation.

Riparian trail and nature center along the Bosque River — covers central Texas ecology, river habitats, and native plant and animal species.

University botanic garden with native plant collections and nature trails — supports plant taxonomy, ecology, and regional botany study.

Municipal botanical garden in Baton Rouge with themed plant collections — covers plant taxonomy, horticulture, and Gulf Coast native ecosystems.

Botanical garden along the Arkansas River with labeled plant collections — supports botany, plant ecology, and horticultural science.

Municipal botanic garden in Wichita with themed outdoor gardens and conservatory — covers plant taxonomy, horticulture, and regional ecology.

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

Coastal Oregon botanical garden supporting plant biology, native species identification, and Pacific Northwest horticultural ecosystem study.

Botanical garden within Las Vegas Springs Preserve — Mojave Desert plant ecology, native xeriscape gardening, and desert habitat conservation.

University-managed tropical botanical garden with diverse Hawaiian and Pacific plant collections — supports botany, ecology, and island biogeography study.

Municipal botanical greenhouse in Grapevine, TX — supports plant biology, horticulture, and climate-zone botany at a hands-on scale.

Regional botanical garden with themed plant collections — plant taxonomy, pollinator ecology, and Ozarks native flora.

Community botanical garden in Charlottesville supporting plant identification, horticulture, and native Piedmont ecology.

Indoor botanical conservatory with living plant collections — covers plant biology, taxonomy, and ecosystems across climate zones.