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U.S. National Arboretum: Gardens: FAQs: Mexican flowering dogwood
A lesser known but important purpose of the National Arboretum is to collect and preserve ornamental plant germplasm. Sometimes, the National Arboretum is one of just a few botanical collections in the world that is growing a particular woody or herbaceous plant species.

Gardens and Horticulture Index Page
Your browser does not support script. Please use the navigation text menu at the bottom of the page. Garden Displays, Collections and Structures Map of Arboretum Grounds

Searching the Globe
Few gardeners can say they are at a loss for new plant material. With a click of the mouse on the Internet or a casual flip through a catalog, a gardener can be anywhere in the botanical world and back again within seconds: camellias from Japan; boxwood from the Republic of Georgia; geraniums from South Africa; or magnolias from South Carolina.

USNA Plant Introductions and Releases
Many of the ornamental and flowering trees and shrubs and herbaceous garden plants found in cities, towns, and home landscapes throughout the United States and many other countries were developed by scientists at the U. S. National Arboretum through years of hybridization, selection, and careful evaluation.

U.S. National Arboretum Plant Introduction
The U.S. National Arboretum presents Lagerstroemia 'Cheyenne', a dazzling crapemyrtle cultivar destined to set your summer garden afire! 'Cheyenne' strikes a pleasing balance between the restraint of its rounded form and the audacious impact of its neon red flowers.


Listings for Arboretums / Botanical Gardens in Arizona
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Arizona Cactus & Succulent Research Botanical Garden
Bisbee,  Arizona  (AZ)  85603

Desert Botanical Garden
Phoenix,  Arizona  (AZ)  85008

The Arboretum at Flagstaff
Flagstaff,  Arizona  (AZ)  86001-8776

Tohono Chul Park
Tucson,  Arizona  (AZ)  85704

Tucson Botanical Gardens
Tucson,  Arizona  (AZ)  85712