A large tree with a climbing rope

November 17 2025

Setting Our Sights High: The 2025 Tree Climbing Academy

November 2 2025

Mark Buscaino: Reflecting on Leadership, Legacy, and Trees

A hose spraying water towards the base of a young tree.

October 27 2025

A Farewell to 2025 Weekly Watering Alerts

A collage of three pumpkins and an invasive vine.

October 27 2025

What’s Really Lurking in Your Yard This Halloween

Leaves on the grass.

October 20 2025

October is Leave the Leaves Month!

An up close photo of orange leaves in the fall

October 6 2025

The Science of the Seasons: Fall Phenology

A row of trees from the Casey Tree Farm, dug up and ready for transport.

September 29 2025

Summer Highlights from the Casey Tree Farm

An audience member smiles at the camera in the crowd at the Urban Tree Summit.

September 22 2025

Rooted in Collaboration: The 2025 Urban Tree Summit

RFK stadium is being demolished as a mature tree stands in the foreground

September 22 2025

RFK Site Update: Proving that Our Advocacy Matters

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

September 22 2025

Celebrating National Public Lands Day

A group of children and an adult plant a tree on a school campus

September 15 2025

Keeping Environmental Education Alive in DC Schools

Four kids sit at a table looking at the rings of a cut piece of tree trunk.

September 8 2025

Summer Highlights: Nature, Play, and Plenty of Trees!

Heritage trees at the Parkside development

September 8 2025

DC’s Tree Laws Should be Protections, Not Suggestions

Collage image that says

August 25 2025

FREE TREE Giveaway at the DC State Fair!

August 25 2025

Sign The Petition: Don’t Cut Down RFK’s Heritage Trees

August 18 2025

Make a Plan for the People and Places You Love 

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