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

Two volunteers removing an invasive vine from a tree.

February 23 2026

Saving Trees, One Vine Removal at a Time

A collage of trees with the

February 2 2026

Phenology February is Here!

Potomac Phil, a taxidermied groundhog, stands in front of snowy trees in Washington, DC.

February 2 2026

Can Trees Predict the Weather?

Looking up at the branches of sycamore trees in winter.

January 26 2026

The Science of the Seasons: How Trees Weather the Winter

Attendees for the Mid-Atlantic Nursery Trade Show (MANTS) walk through an entrance.

January 12 2026

Showcasing Our Farm at MANTS

January 5 2026

Your 2026 Checklist for a Greener Year

December 29 2025

7,000 Trees and Counting: Our 2025 Impact by the Numbers

December 21 2025

Bringing Winter Tree ID to Action

December 18 2025

Update: Tree Preservation Enhancement Amendment Act of 2025

A closeup of an American holly tree.

December 17 2025

Evergreen Trees

A volunteer measures the circumference of a tree.

December 15 2025

Updates From the Field: More From Our GCA Fellows 

Close-up photo of beech leaves.

December 15 2025

Beech Leaf Disease: An Emerging Threat to Our Forests

A forested area in Kenilworth Park

December 8 2025

Stewarding Nearby Nature: The Residences at Kenilworth Park

A collage that says

December 1 2025

Our 2025 Holiday Gift Guide