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Main Project Information
Goal Help calculate environmental impact of region's urban forest.
Task Simply add information to the database about trees near you.
Where Philadelphia, Philadelphia County, Pennsylvania, United States of America

Help identify and catalog the trees in Philadelphia's urban forest! PhillyTreeMap is an open-source, web-based map database of trees in the greater 13-county 3-state Philadelphia region. The wiki-style database enables non-profits, government, volunteer organizations, and the general public to collaboratively create an accurate and informative inventory of the trees in their communities. The project was funded by a USDA Small Business Innovation Research Grant and is in support of the Philadelphia Parks & Recreation's 30% tree canopy goal and the Pennsylvania Horticultural Society's "Plant One Million" campaign. As more trees are added to the database, PhillyTreeMap uses the iTree software from the USDA Forest Service to calculate the environmental impact of the region's urban forest. So get outside and add some trees!

How to Join

If you want to explore the project first, search the database of trees already on by address, species, or by browsing the map on the website.

If you'd like to help us add trees and their information to the database, create your account at:
Then, you'll be able to log in to the site and start adding new trees to the database or update trees already listed with information about their trunk diameter, species, location and local environment. For more information on how to use the site and catalog trees, see: For other information, such as a cool tip on how to measure a trunk's diameter, see or contact us at

If you're technical and interested in contributing to the open-source software that powers PhillyTreeMap, OpenTreeMap, check us out on gitHub:

Check out the WHYY (NPR) segment about Philly Tree Map:

Ideal Age Group Elementary school (6 - 10 years), Middle school (11 - 13 years), High school (14 - 17 years), College, Graduate students, Adults, Families
Spend the Time outdoors
Type of Activity On a walk, run, On a hike, At home
Media Mentions
and Publications
Tags android, app, crowd mapping, iphone, philadelphia, tree, trees
Project Updated 07/20/2018