Our local forests have far fewer oak trees than were present in the 1800s and yet, of all our native trees, the oak tree is ...

Many caterpillars feed on the leaves of oak trees. Most will not do much damage, but some can pose a real threat to the health of the tree. Here’s what you need to know to identify the caterpillars on ...

A single large pin oak tree can rain down up to 400,000 oak leaf itch mites per day. Oak mites can live through the winter in protected areas or within leaves/leaf litter on the ground.

When there are holes in the leaves or leaf edges are missing tissue, we add another symptom name to the mix: tatters. Distorted new growth and tatters are most common on white oaks and may ...

Leaves should be packed in a closeable bag with a damp paper towel to maintain moisture during transit. For Oak Wilt testing, 4-6 branch sections (each 8 to 12 inches long and approximately 0.5 to ...

Most trees have the type of cells that drop their leaves in the fall while marcescent trees don’t utilize the abscission cells to drop their leaves until the spring when the new buds form.