Black oak is the most common eastern United States oak. The oak has spiny leaves and acorns that take two years to ripen. Black oak (Quercus velutina) is a common, medium- to large-sized oak of ...

These tiny wasps are not dangerous to humans in any way, and they do not have horns; they’re named for the shape of the leaf galls they cause to form on the undersides of oak leaves. Female gall ...

Artist Clare Hewitt uses fallen oak leaves and sunlight to create her works of art before returning the leaves to the forest ...

While, to many, fall is as good a season as any other, it can be the worst for those who are prone to oak leaf itch mites. These are commonly known to feed on larvae of an oak gall midge (fly ...

Illustrations adapted from examples by ... At left is a typical warm weather leaf from a southern live oak tree. At right is a leaf more typical of cooler weather, from a sweetgum tree in the ...

Galls on oak leaves are harmless growths caused by specific insects. They have different shapes depending on the insect species causing the gall.

Live oak leaves have fallen over a long season this year. The cold weather following a dry autumn may have contributed to the early leaf drop experienced in some landscapes. Those leaves are a ...

Q:We have so many leaves from our oak trees. As much as we compost everything else, we find leaves difficult to decompose. What should we do with them? I refuse to put them in the landfill.