A new study reveals oak trees delay sprouting leaves by 3 days to avoid being infested by hungry caterpillars, after it happened last year.

An infestation of caterpillars can make an oak tree postpone when it opens its leaves next year by three days, wrong-footing the insects when they attack again ...

Every spring across Europe, billions of oak leafroller moth caterpillars hatch on oak branches and immediately start chewing.

Oak trees have a surprising trick to fight back against hungry caterpillars: they simply wait. When trees are heavily ...

The trees' clever tactic to outwit potentially deadly predators was detected by scientists in Germany using satellite data. The post Study finds oak trees delay leaves to outwit hungry caterpillars ...

Find out which type of oak trees to plant, plus the benefits they offer to your landscape and the environment.

A close-up of an oak leaf with bumps, or galls, from the gall wasp, Photo courtesy Getty Images. Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert ...

Waiting until the leaves drop in fall is a rule of thumb for pruning shade trees, mainly because you can see bare limbs better, and the job is less “messy” without leaves attached to the cut branches.

Add Yahoo as a preferred source to see more of our stories on Google. Large oak tree in front of nice neighborhood Oak trees have been around for more than 50 million years, with individual trees ...

Add Yahoo as a preferred source to see more of our stories on Google. Getty Images There’s a reason it’s called the Mighty Oak: Oak trees are stately trees that can live for hundreds (yes, hundreds!) ...

Many coast live oak (Quercus agrifolia) trees are showing unusual browning in their canopies in the last month or two. If you look carefully, you may see small, crescent-shaped galls forming on the ...

Oak trees are valuable to the Northwoods environment, recreation and wood products industries, but many are in danger.