Q: Our oak tree is about 70 feet tall. This spring, it developed dried-out bunches of leaves starting at the ends of the ...

Seeing unusual growths on your trees? Learn what oak tree galls look like, what causes them and how to manage them with expert advice.

After the periodical cicada broods emerged, oak leaf itch mites, who feed on their nests, could now be the cause for itchy ...

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.

For those of you who aren’t aware that live oak trees drop their leaves every year despite the fact that we describe them as evergreen, look at the ground now. If you have live oak trees, they ...

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 ...

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 ...

The leaves are down, winter is upon us, and that means it’s prime time for pruning oak trees, which can be infected by the oak wilt fungus if they’re pruned during the high-risk period mid ...

In the fall, a middle-aged man’s fancy lightly turns to thoughts of leaves. Raking them, mainly, but also wondering why his neighbor’s oak tree is shedding such freaking gigantic leaves.

Oak trees are special for many reasons: they’re Iowa’s state tree, they’re important to our ecosystem and — they shouldn’t be pruned during the spring growing season.