The Tree City USA program is a national program that provides the framework for community forestry management for cities and towns across America.
Communities achieve Tree City USA status by meeting four core standards of sound urban forestry management: maintaining a tree board or department, having a community tree ordinance, spending at least $2 per capita on urban forestry and celebrating Arbor Day.
Participating communities have demonstrated a commitment to caring for and managing their public trees. Together the more than 3,400 Tree City USA communities serve as home to more than 135 million Americans.
- Arizona Community Tree Council
- International Society of Arboriculture
- I.S.A Western Chapter
- Planting Trees in the Desert