The Lexington Tree Inventory was completed by ArborPro.
View the current tree inventory on a map.

Lexington's Major Street Tree Species
- Norway maple —This is the most populous and is an invasive species. The Norway maple was planted as a hardy street tree to replace the dying American elm, before its invasive properties were understood.
- Red oak — native species
- Red maple — native
- White pine — native
- Sugar maple — native
- 'Mixed groves' — These are found in minimally managed roadside areas and contain different species of trees.
- White ash — native
- Callery pear — This non-native species has invaded both Lincoln Park and Belfry Hill.
- Black cherry — native
- 'Other' — The large size of this category indicates the wide diversity of species in Lexington's tree population.
Data Collection
Data is collected using handheld computers. Interns documented their computer procedures. They developed a system to count trees in minimally managed areas by grouping them in 'groves' rather than locating each individual tree stem. This is a technique that made counting roadside areas efficient.

Lexington's tree population is primarily healthy.
Summary of State of Town Tree Health:
- Good: 79%
- Fair: 15%
- Poor: 6%
- Total: 100%
