San Antonio Botanical Garden
Science, Institutions, Botanical Gardens and Arboreta - San Antonio Botanical Garden. Offers educational events, programs, and classes year-round.
https://www.sabot.org/
Houston Arboretum and Nature Center
Science, Institutions, Botanical Gardens and Arboreta - Houston Arboretum and Nature Center. Calendar of events, list of activities, information about animal life, and volunteer opportunities.
https://www.houstonarboretum.org/
The University of California Botanical Garden
Science, Institutions, Botanical Gardens and Arboreta - The University of California Botanical Garden. Diverse collections are grown on a hilly site overlooking the Berkeley campus, near the San Francisco Bay.
https://botanicalgarden.berkeley.edu/
The United States National Arboretum
The U.S. National Arboretum is a U.S. Department of Agriculture research and education facility and a living museum. It is dedicated to serving the public and improving our environment by developing and promoting improved floral and landscape plants and new technologies through scientific research, educational programs, display gardens, and germplasm conservation.
http://usna.usda.gov/
Ladew Topiary Gardens
Science, Institutions, Botanical Gardens and Arboreta - Ladew Topiary Gardens. Topiary and flower gardens plus a nature walk and historic home.
https://www.ladewgardens.com/
Dow Gardens
Science, Institutions, Botanical Gardens and Arboreta - Dow Gardens. Plant collection, events, virtual tour.
https://dowgardens.org/
The Dawes Arboretum in Ohio
Science, Institutions, Botanical Gardens and Arboreta - The Dawes Arboretum. Includes 1,149 acres of plant collections and natural areas.
https://dawesarb.org/
Buffalo and Erie County Botanical Gardens
The Buffalo and Erie County Botanical Gardens is a national historic site, education center and tourist destination full of exotic horticulture treasures. Although there are some plants native to our temperate region, most are native to tropical and sub-tropical regions of the world. Made up of three glass domes and nine greenhouses, this breathtaking Victorian conservatory is situated on 11.4 acres at the entrance to BuffaloOCOs historic South Park.
https://www.buffalogardens.com/
VanDusen Botanical Garden
VanDusen Botanical Garden, tourist attraction offering diverse plant collections,garden courses, family and children adventures, Elizabethan maze, school programs, tours, bird walks, garden shop, flower & garden show. Premiere visitor attraction in the Pacific Northwest.
https://www.vandusengarden.org/