Tree of the Month: Deodar Cedar
Winter is officially upon us, bringing the cold, snow, and barren deciduous trees. Thankfully, tree lovers can take time to appreciate evergreen trees like the deodar cedar (Cedrus deodara), our …
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Tree of the Month: Japanese Pagoda Tree
Spring has definitely passed! While you may associate the end of spring with the end of beautiful blossoms, there are still some sweet-smelling flowers to look forward to this summer. …
Tree of the Month: Scarlet Oak
The chill of last weekend may have stripped some trees of their foliage, but many will retain their leaves late into the season, including our November Tree of the Month, …
Tree of the Month: Northern Red Oak
Summer doesn’t officially start until June 21st but it seems the weather didn’t get the memo. D.C. has been sunny and beautiful lately, but brutally hot. Heat advisories were issued …
Tree of the Month: American Chestnut
Though today is the first of December, you have probably already heard Christmas tunes on the radio for weeks. It’s hard to think of the holidays without getting that lyric …
Tree of the Month: Serviceberry
A precocious tree, the serviceberry (Amelanchier arborea) is one of the first trees to bloom in the spring. Its creamy white or pale pink star-shaped flowers bloom in loose clusters …
Tree of the Month: American Sycamore
Some deciduous trees have a distinctive appearance in the winter, even without their leaves. The American sycamore (Platanus occidentalis) is one of these trees. Several trees are commonly called sycamores, …
The Jefferson American Elm
The first elm to earn the name ‘Jefferson’ is on the National Mall near the Freer and Sackler Galleries. It stands out for its shape — it has the traditional …
Cultivars of the American Elm
Why do we plant different cultivars of the American Elm? Surely there’s nothing quite like the original Ulmus americana. The classic American Elm is hardy, fast-growing and can grow into …
How to identify and American Elm
How do you know an American Elm when you see one? Here are some characteristics of American Elms that will help you identify these trees on the streets of DC. …
Elm Pruning Workshop Recap
Twenty Casey Trees Citizen Foresters, staff members and other volunteers joined National Park Service horticulturist Barry Stahl on Saturday, January 8, for a tree pruning workshop at Daingerfield Island. This …
Tree of the Month: American Holly
Now that winter is approaching and the leaves of many deciduous trees have fallen, some of the most vibrant trees in our city become more apparent. The American Holly (ilex …
What does it mean? Spray paint on trees & sidewalks
Every so often you may notice spray paint marks on street trees and sidewalks. What do they mean? The District Department of Transportation’s Urban Forestry Administration (UFA), whose mission is …