News & Updates

East Potomac Park, photo by Tim Evanson: https://www.flickr.com/photos/timevanson/albums/72157635256523043

October 13 2026

East Potomac Park: A Voice for Our Trees, a Say in Our Parks

Trees are under threat at East Potomac Park, where the National Park Service removed up to 529 trees over the […]

September 28 2026

Navigating What’s Next: A Recap of the 2026 Urban Tree Summit

Last week, our 2026 Urban Tree Summit brought together arborists, advocates, educators, researchers, nonprofit professionals, public-sector leaders, and community members […]

A large sign labels a forested area in the background as a Conservation Area

September 21 2026

Celebrating National Public Lands Day

This Saturday is National Public Lands Day (NPLD), an annual event established by the National Environmental Education Foundation that brings […]

Four unripe pawpaw fruit hanging from a tree

September 14 2026

Pawpaw Season is Here!

A closeup of a redbud tree with a bare branch.

August 24 2026

No, Your Tree Isn’t Dead (But Here’s How to Nurse It Back to Health)

A zebra swallowtail butterfly flutters above a row of cover crops.

August 17 2026

Building Healthy Soil and a Thriving Ecosystem at Casey Tree Farm

A yard sign says

August 3 2026

Make-A-Will Month: How Your Love of Trees Can Last Generations

A collage of five close-up photos of a bur oak, hackberry, eastern red cedar, honey locust, and northern catalpa.

July 27 2026

Five Drought-Tolerant Trees That Can Take the Heat

July 13 2026

Mapping DC’s Most and Least Shaded Neighborhoods

A honeybee and a bumblebee circle the flowers of an American linden tree.

June 29 2026

Why Pollinators Need Trees, Too

Looking up at a tree canopy and the summer sun

June 22 2026

The Science of the Seasons: Summer Phenology

Top of a tree of heaven.

June 8 2026

Tree of Heaven: The Invasive That’s Probably in Your Backyard

June 1 2026

DC’s New Tree Protections: A Win for Our City’s Trees and Residents

A group of people gathered at the grand opening of Ravenswood.

June 1 2026

From Overgrown to Forever Protected: Riverdale Welcomes a New Community Forest

May 18 2026

Looking Back on an Impactful Planting Season

May 18 2026

The Serviceberry: A Guide to Appreciating this Small but Mighty Tree

Picture of 3 different blooming trees

May 11 2026

Seven Beautiful Trees That Are Late Bloomers

Green Budget Day rally crowd

May 4 2026

Advocacy Update: DC’s Next Budget

Volunteers planting a tree in Lincoln Park.

April 13 2026

Tree Plantings for America’s 250 Begin at Lincoln Park

April 6 2026

Trees: Celebrating DC’s Homegrown Monuments

A member of the Casey Trees team waters a young tree

April 6 2026

Weekly Watering Alerts Are Back!

Lake Arbor Tree Planting Landscape

March 23 2026

Tee Time to Tree Time: A Lake Arbor Golf Course Transformation

A closeup of a Yoshino Cherry blossom.

March 16 2026

Cherry Blossom Season is Here! Find Blooms Near You.

A bumblebee on a plant

March 16 2026

Casey Trees Awarded Nearly $500,000 to Create Wildlife Corridors Across Washington, DC

Trees around a home with solar panels

March 9 2026

Reducing Energy Costs with Trees

A collage of Eastern Redbud and Red Maples trees with the

March 2 2026

Finally, Our Phenology February Champion

Frederick Douglass' home at Cedar Hill; a house on a hill surrounded by large trees.

February 23 2026

Frederick Douglass and the Nature at Cedar Hill