May 3, 2021 /
Jona Elwell

Order Our Newest Species Guide

We’ve updated one of the most popular Casey Trees resources to be even more user-friendly and informative! Get ready to purchase a one-stop guide to identifying trees in the Washington, DC area, our Species Guide

First released in 2019, the Species Guide started as a home grown resource at our Park Inventory program. We couldn’t find a portable, image based, user friendly tree identification book for this area – so we made one. A perk of this updated version? It’s waterproof!

Used at our Park Inventories by volunteers and now by excited tree folks, this practical guide details more than 50 tree species, from those found along our streets to those deep in Rock Creek Park. We’ve removed most of the barriers found in other field guides and designed a guide for all ages – from toddlers to those with walkers. It skips all the technical tree vocabulary, dichotomous key and endless flipping through pages by identifying trees using a simple picture leaf guide (did we also mention a fruit/seed guide page as well!).


Originally designed for Team Leads, Interns, and volunteers taking on a bigger role in our programs, over time, it became apparent that folks want to identify trees in the spaces around them – yards, alleyways, schools. So we decided to give the people what they want. We made it available to a bigger demographic in the hopes that we’ll empower people to learn about the environment around them. All proceeds raised by this guide will go back towards our Park Inventory program, as we continue to work with volunteers to catalog trees that have never before quantified before across DC parklands. Buy yours today!