Don't worry if you live in the Northeast — this pest usually sticks to other regions. Here's where it's found and why your ...

Oregon officials have found the Mediterranean oak borer in six counties across the valley, just as another pest is killing ash trees in the region.

The non-native oak lace bug is causing increased damage to Oregon white oak trees, according to the Oregon Department of Forestry. While the oak lace bug has been in Oregon since 2015, their damage ...

‘I have some weird, seemingly hollow, green, round balls falling from my oak tree. What in the world are these things?” — S.Y. You are describing an interesting growth that can occur on a variety of ...

In the Dec. 18 edition, I wrote about the reasons why many of our oak trees are dying at a relatively young age. This week we’ll delve into what we ...

Agriculture officials in Marin County are alerting property owners and arborists to be on the lookout for a tiny invasive beetle that attacks oak trees, after the insect was detected last month in ...

Welcome to our tree column, “Ask your local arborist.” Each month, arborists from the Davey Tree Expert Company in Menlo Park discuss a tree-related topic from general care and planting tips to how ...

When Illinois landowners noticed tree deaths and diseases on their properties ramp up in 2017, they suspected industrial agriculture. A survey found herbicides in 90 percent of tree tissues Christian ...

Oak trees around Minnesota have suffered from bouts of heavy precipitation and drought — conditions that make them more vulnerable to two-lined chestnut borer, a beetle that eats the inner bark of oak ...

STRONGSVILLE, Ohio -- Now that the first frost has occurred, it is time to start thinking about pruning oak trees to minimize the spread of oak wilt, a lethal disease affecting oak trees that is ...