A member of the Casey Trees team waters a young tree

April 6 2026

Weekly Watering Alerts Are Back!

Two volunteers removing an invasive vine from a tree.

February 23 2026

Saving Trees, One Vine Removal at a Time

Close-up photo of beech leaves.

December 15 2025

Beech Leaf Disease: An Emerging Threat to Our Forests

Dog-day cicada on a branch.

August 4 2025

The Cicadas are Coming (but not to DC)!

Elliot in June watering a young street tree

July 21 2025

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

A group of students walk toward a large tree

April 21 2025

How You Can Help DC’s Trees Thrive—on Earth Day and Every Day

February 24 2025

A Thriving Forest at Brentwood Reservoir

January 5 2025

Winter Tree Care

September 30 2024

Why Autumn is the Perfect Time to Plant Trees

January 29 2024

Most UN-Wanted: Bamboo

January 22 2024

Most UN-Wanted: Kudzu

January 16 2024

Most UN-Wanted: Bush Honeysuckle

January 8 2024

Most UN-Wanted: Porcelain Berry

January 2 2024

Most UN-Wanted: English Ivy