August 18 2025

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

Two incoming Howard University Law students smile for the camera in front of a truck filled with mulch. Other students and Casey Trees employees work in the background.

August 11 2025

Taking Care of DC’s Trees With Howard University Law Students 

A tree-lined street near H Street in Washington, DC

August 11 2025

Can Trees and Green Spaces Help Promote Public Safety? 

Dog-day cicada on a branch.

August 4 2025

The Cicadas are Coming (but not to DC)!

Shadows casting on a building

July 28 2025

Seeking Shade in American Cities

Four unripe pawpaw fruit hanging from a tree

July 28 2025

Get Ready for Pawpaw Season! 

July 21 2025

Mapping DC’s Most and Least Shaded Neighborhoods

Elliot in June watering a young street tree

July 21 2025

One Kid’s Mission to Water All the Trees in His Neighborhood

Looking up at a tree canopy and the summer sun

June 30 2025

The Science of the Seasons: Summer Phenology

Students stand in a circle at the National Arboretum

June 30 2025

Cultivating Tomorrow’s Environmental Champions Through Outdoor Education

June 20 2025

Public Testimony | June 13, 2025 | Committee on Transportation & the Environment

a team of volunteers drops mulch at a volunteer event in Emery Heights Park

June 16 2025

Summer Is Here! Check Out Our Upcoming Events

June 11 2025

Public Testimony | June 2, 2025 | Committee on Transportation & the Environment

June 9 2025

Casey Trees and Bartlett Tree Experts, A Crowning Partnership Made in the Shade (of Urban Trees)

Boulder Bridge at Rock Creek Park

June 2 2025

DC Is Hot and Humid – But Is It Really a Swamp?

Two students dig a hole as they learn how trees are planted

June 2 2025

“Best Day of My Life”: Highlights From School Tree Planting Season

May 19 2025

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

A team of volunteers pause digging to pose for a photo with their shovels at the Armed Forces Retirement Home

May 19 2025

Looking Back on Our Final Community Tree Planting of the Season

May 19 2025

Beyond No-Mow May: Transforming Lawns into Lush Gardens and Tree Havens

Picture of 3 different blooming trees

May 12 2025

Seven Beautiful Trees That Are Late Bloomers

May 12 2025

Talking Urban Tree Selection with the GardenDC Podcast

Two volunteers apply fresh mulch to a young tree

May 12 2025

Things to Do in June For Trees & Community

May 5 2025

Sign up for a Nature Summer Camp with Casey Trees

DC Climate Week at Sycamore & Oak

May 5 2025

Highlights from DC Climate Week 2025