Alabama
Noccalula Falls Botanical Gardens
University of Alabama Arboretum
Alaska
Georgeson Botanical Garden the University of Alaska Fairbanks, Fairbanks
Jensen-Olson Arboretum City and Borough of Juneau, Juneau
Pratt Museum and Park Botanical Garden
California
California State University Northridge Botanic Garden
Luther Burbank Home and Gardens
Los Angeles County Arboretum and Botanic Garden
Manhattan Beach Botanical Garden
Marin-Bolinas Botanical Gardens
Mildred E. Mathias Botanical Garden
McConnell Arboretum and Gardens
Colorado
Western Colorado Botanical Gardens
Connecticut
Bartlett Arboretum and Gardens
Dinosaur State Park and Arboretum
EEB Biodiversity Education & Research Greenhouses
Richard Haley Wildlife Gardens
Delaware
Delaware Center for Horticulture
University of Delaware Botanic Gardens
Winterthur Museum, Garden and Library
Wyoming
Washington, D.C.
American University Arboretum and Gardens
Kenilworth Park and Aquatic Gardens
United States National Arboretum
Florida
American Orchid Society Visitors Center and Botanical Garden
Arboretum of the University of Central Florida
Botanic Gardens at Kona Kai Resort
Cummer Museum of Art and Gardens
Edison and Ford Winter Estates
Fairchild Tropical Botanic Garden
Florida Institute of Technology Botanical Garden
Jacksonville Arboretum & Gardens
Key West Tropical Forest & Botanical Garden
Alfred B. Maclay7 Gardens State Park
Morikami Museum and Japanese Gardens
Nature Coast Botanical Gardens
Ormond Memorial Art Museum and Gardens
Peace River Botanical and Sculpture Gardens
Tropical Ranch Botanical Garden
Unbelievable Acres Botanic Gardens
University of South Florida Botanical Gardens
Georgia
Waddell Barnes Botanical Gardens
Coastal Georgia Botanical Gardens
Coastal Plain Research Arboretum
Georgia Perimeter College Botanical Garden
Georgia Southern Botanical Garden
Fred Hamilton Rhododendron Garden
The State Botanical Garden of Georgia
University of Georgia Campus Arboretum
Guam
Zoological, Botanical & Marine Gardens
Hawaii
Enchanted Floral Gardens of Kula, Maui
Amy B. H. Greenwell Ethnobotanical Garden
Hawaii Tropical Botanical Garden
Kaia Ranch Tropical Botanical Gardens
Kapiolani Community College Cactus Garden
Na ʻĀina Kai Botanical Gardens
Olu Pua Botanical Garden and Plantation
Pua Mau Place Arboretum and Botanical Garden
Sadie Seymour Botanical Gardens
Spirit of Aloha Oceanfront Botanical Garden
University of Hawaii at Hilo Botanical Gardens
Idaho
University of Idaho Arboretum and Botanical Garden
Illinois
Mabery Gelvin Botanical Garden
Klehm Arboretum and Botanic Garden
Abraham Lincoln Memorial Garden
Longview Park Conservatory and Gardens
George L. Luthy Memorial Botanical Garden
Nicholas Conservatory and Gardens
Tinker Swiss Cottage and Gardens
University of Chicago Botanic Garden
University of Illinois Arboretum
University of Illinois Conservatory and Plant Collection
Indiana
Foellinger-Freimann Botanical Conservatory
Gabis Arboretum at Purdue Northwest
Garfield Park Conservatory and Sunken Gardens
James Bethel Gresham Arboretum at Locust Hill Cemetery
James Irving Holcomb Botanical Gardens
Jesse H. and Beulah Chanley Cox Arboretum
Mesker Park Zoo and Botanic Garden
Oldfields (Lilly House and Gardens)
Purdue University Horticulture Gardens
Wheeler Orchid Collection and Species Bank
William Halbrooks Arboretum at Oak Hill Cemetery
Iowa
Cedar Valley Arboretum & Botanic Gardens
Dubuque Arboretum and Botanical Gardens
Forest Park Museum and Arboretum
Frontier Organic Research Farm Botanical Garden
Greater Des Moines Botanical Garden
Lilac Arboretum and Children’s Forest
Newton Arboretum and Botanical Gardens
University of Northern Iowa Teaching and Research Greenhouse
Kansas
International Forest of Friendship
Kansas State University Gardens
Overland Park Arboretum and Botanical Gardens
Reinisch Rose Garden and Doran Rock Garden
Sedgwick County Extension Arboretum
Ward-Meade Park Botanical Gardens
University of Kansas Medical Center Botanic Gardens
Kentucky
Bernheim Arboretum and Research Forest
University of Kentucky/Lexington-Fayette Urban County Government Arboretum
University of Kentucky Research and Education Center Botanical Garden
Western Kentucky Botanical Garden
Louisiana
Laurens Henry Cohn Sr. Memorial Plant Arboretum
The Gardens of the American Rose Center
Independence Park Botanic Gardens
Louisiana Tech University Arboretum
Maine
Coastal Maine Botanical Gardens
Fay Hyland Botanical Plantation
Harvey Butler Memorial Rhododendron Sanctuary
Lyle E. Littlefield Ornamentals Trial Garden
Maryland
Historic London Town and Gardens
Howard Peters Rawlings Conservatory and Botanic Gardens of Baltimore
Salisbury University Arboretum
University of Maryland Arboretum & Botanical Garden
Michigan
Fernwood Botanical Garden and Nature Preserve
Frederik Meijer Gardens & Sculpture Park
Michigan State University Horticulture Gardens
Anna Scripps Whitcomb Conservatory
Minnesota
Eloise Butler Wildflower Garden and Bird Sanctuary
Carleton College Cowling Arboretum
Como Park Zoo and Conservatory
Leif Erickson Park & Rose Garden
The Arboretum at Gustavus Adolphus College
Munsinger Gardens and Clemens Gardens
Mississippi
Forestry Sciences Laboratory Arboretum
Jackson State University Botanical Garden
Missouri
Ewing and Muriel Kauffman Memorial Garden
Montana
Tizer Botanic Gardens & Arboretum
Botanical Gardens of Zoo Montana
Yellowstone Arboretum of Zoo Montana
Nebraska
Arbor Lodge State Historical Park and Arboretum
Doane College Osterhout Arboretum
Itha T. Krumme Memorial Arboretum
Lauritzen Gardens, Omaha’s Botanical Center
D. A. Murphy Panhandle Arboretum
Norris Forest School Arboretum
Nevada
Ethel M Botanical Cactus Garden
The Gardens at the Las Vegas Springs Preserve
Wilbur D. May Arboretum and Botanical Garden
Southern Nevada Zoological-Botanical Park
University of Nevada, Reno Arboretum
New Hampshire
New Jersey
Bamboo Brook Outdoor Education Center
Colonial Park Arboretum and Gardens
Cora Hartshorn Arboretum and Bird Sanctuary
Florence and Robert Zuck Arboretum
Sister Mary Grace Burns Arboretum
Stony Brook Millstone Watershed Arboretum
New Mexico
Albuquerque BioPark Botanic Garden
Living Desert Zoo and Gardens State Park
University of New Mexico Arboretum
New York
Bayard Cutting Arboretum State Park
Buffalo and Erie County Botanical Gardens
Genesee Country Village and Museum
John P. Humes Japanese Stroll Garden
Staten Island Botanical Garden
University of Rochester Arboretum
North Carolina
Botanical Gardens at Asheville
Cherokee Botanical Garden and Nature Trail
Mariana H. Qubein Arboretum & Botanical Gardens
Elon University Botanical Gardens
Haywood Community College Arboretum
New Hanover County Extension Service Arboretum
North Carolina Botanical Garden
Sandhills Horticultural Gardens
Tanglewood Park Arboretum and Rose Garden
University of North Carolina at Charlotte Botanical Gardens
University of North Carolina at Wilmington Arboretum
Wing Haven Gardens and Bird Sanctuary
North Dakota
Berthold Public School Arboretum
Fort Stevenson State Park Arboretum
Gunlogson Arboretum Nature Preserve
Northern Plains Botanic Garden Society
Ohio
Cincinnati Zoo and Botanical Garden
Cox Arboretum and Gardens MetroPark
Inniswood Botanical Garden and Nature Preserve
Woodland Cemetery and Arboretum
Oklahoma
Cann Memorial Botanical Gardens
Cedarvale Botanic Garden and Restaurant
Washington Irving Memorial Park and Arboretum
Kerr Arboretum and Botanical Area
North Central Oklahoma Cactus Botanical Garden
North Oklahoma Botanical Garden and Arboretum
Oklahoma Botanical Garden and Arboretum
Oklahoma City Zoo and Botanical Garden
Tulsa Botanic Garden (formerly Oklahoma Centennial Botanical Garden)
Pennsylvania
Appleford/Parsons-Banks Arboretum
Arboretum at the Reading Public Museum
Arboretum at Penn State Behrend
Arboretum of the Barnes Foundation
Bowman’s Hill Wildflower Preserve
Brandywine Wildflower and Native Plant Gardens
Lee and Virginia Graver Arboretum
Henry Foundation for Botanical Research
Phipps Conservatory and Botanical Gardens
Renziehausen Park Rose Garden and Arboretum
Rodef Shalom Biblical Botanical Garden
Louise Arnold Tanger Arboretum
Puerto Rico
Institute of Sustainable Biotechnology
Heliconia Society of Puerto Rico
Tropical Agricultural Research Station
Arboretum and Casa Maria Gardens
William Miranda Marín Botanical and Cultural Garden
Oregon
Beekman Native Plant Arboretum
Crystal Springs Rhododendron Garden
Elk Rock Gardens of the Bishop’s Close
International Rose Test Garden
Martha Springer Botanical Garden
Beekman Native Plant Arboretum
Rhode Island
South Carolina
Furman University Asian Garden
Magnolia Plantation and Gardens
Medical University of South Carolina Arboretum
South Carolina Botanical Garden
South Dakota
McCrory Gardens and South Dakota Arboretum
Tennessee
Cheekwood Botanical Garden and Museum of Art
Cherokee Arboretum at Audubon Acres
Gerald D. Coorts Memorial Arboretum
Deerwood Arboretum and Nature Area
Texas
D. A. “Andy” Anderson Arboretum (Originally named Brazos County Arboretum
Chihuahuan Desert Nature Center and Botanical Gardens
Dallas Arboretum and Botanical Garden
East Texas Arboretum and Botanical Society
Houston Arboretum and Nature Center
Lady Bird Johnson Wildflower Center
Mercer Arboretum and Botanic Gardens
Ruth Bowling Nichols Arboretum
Shangri La Botanical Gardens and Nature Center
South Texas Botanical Gardens & Nature Center
Umlauf Sculpture Garden and Museum
U.S. Virgin Islands
St. George Village Botanical Garden
Utah
Brigham Young University Arboretum (Harrison Arboretum)
Red Butte GRed Butte Garden and Arboretumarden and Arboretum
Robert L. Shepherd Desert Arboretum
Stein Eriksen Lodge Botanical Garden
Vermont
Vermont Experimental Cold Hardy Cactus Garden
Virginia
Joseph Bryan Park Azalea Garden
Museum of the Shenandoah Valley
Orland E. White Research Arboretum
Washington
Evergreen Arboretum and Gardens
Carl S. English Jr. Botanical Gardens
West Virginia
Cranberry Glades Botanical Area
Wisconsin
Mitchell Park Horticultural Conservatory
University of Wisconsin–Madison Arboretum
University of Wisconsin–Madison Botany Garden and Greenhouse
Wyoming
Massachusetts
The Botanic Garden of Smith College
Stanley Park (Westfield, Massachusetts)
Wellesley College Botanic Gardens