Delaware's state tree is the American Holly, which can reach up to 60 feet tall. District of Columbia Washington, D.C. has its own symbolic tree, despite not being a declared state.

Use leaves, bark, and habitat to identify the black oak tree. ... Black Cherry, an Important North American Tree. Scarlet Oak, A Top 100 Common Tree in North America. Tree Species Taxonomy.

With 90-plus North American species and about 435 worldwide, Quercus is the Northern Hemisphere’s largest tree genus, made up mostly of trees that are very large and very long-lived, two factors ...

Fire-intolerant trees with far less ecological value — maple, beech, basswood, black gum, tulip trees — have risen to replace the oak, hickory and pine forests, which need regular fire to open ...

In the American South, caterpillars lay their eggs on the leaves of southern live oaks; farther north, they depend on other oak species. Once they become butterflies, though, they are hard to spot ...

One of New Jersey’s oldest and recognizable symbols is no more. The Salem Oak Tree, estimated to be between 500 and 600 years old, uprooted and collapsed Thursday. When news of the tree’s ...

Aangel oak, a southern live oak located on Johns Island, S.C., is an estimated 400 to 500 years old.

It’s an early morning in late summer, and as commuters zip down Rock Creek Parkway—through its thick canopy of American beech, oak, and tulip poplar—one man is slowly circling a massive oak tree, ...