As the City of Pittsburgh marks its 20th consecutive year as a Tree City USA, the Department of Public Works is proud to announce that Allegheny Commons Park has been formally accredited as a Level I Arboretum by ArbNet, a global network that supports the work of arboreta through professional standards and accreditation.
This prestigious designation recognizes Allegheny Commons Park for its growing collection of tree species, community engagement, and commitment to education, stewardship, and long-term planning.
“This milestone is about more than just trees—it’s about the health of our neighborhoods, the beauty of our parks, and the strength of our commitment to sustainability,” said Mayor Ed Gainey. “Being a Tree City USA for 20 years shows how deeply Pittsburgh values its green spaces, and the ArbNet recognition at Allegheny Commons proves that we are continuing to lead with purpose, partnership, and pride.”
To achieve Level I accreditation through ArbNet, Allegheny Commons Park met the following criteria:
- A collection of at least 25 species of trees or woody plants
- A documented arboretum plan and established planting and maintenance standards
- A dedicated group of staff or volunteers to manage the collection
- Ongoing community education and engagement efforts.