We also noticed a 3-foot-tall shagbark hickory that was holding onto its leaves, which can occur in younger trees. My sister’s Japanese maple is awash with brown curly leaves, even in February.

“I saw in Louisiana a live-oak growing / All alone stood it, and the moss hung down from the branches.” —Walt Whitman, Leaves of Grass, 1860-61 More than 150 years after Whitman wrote those ...

Trees in the white oak family exhibit less-defined symptoms. Sometimes, only a few branches will show symptoms -- the leaves will turn tan in color and cling to the branches. White oaks do not die ...

An oak tree can produce leaves of different sizes from year to year, depending on what that specific tree has experienced in the preceding seasons. Accessibility statement Skip to main content.

Treehugger/ Alexandra Cristina Nakamura. Besides its branches, roots, and leaves, a mature tree also grows another important structure—the flower (or cone, in the case of evergreens).

Among the most alarming are Bacterial Leaf Scorch (BLS) and Oak Wilt, both of which can kill oak trees. “Most of the time, oak wilt is vectored or carried from tree to tree by insects. So it’s ...

WOOD you be-LEAF it? A huge oak tree found in the Scottish Highlands has been voted Tree of the Year by the public. It is thought to be at least 400 years old, and was completely unknown to tree ...