Tree experts say green ash trees that are losing leaves in Le Mars and other parts of northwest Iowa have a common fungal disease, not an insect problem, and the trees aren't dying. Last week, state ...

The emerald ash borer has made its way to Portland, posing a threat to 100,000 ash trees in the city, and the Oregon Department of Forestry is working with the public to monitor the spread and ...

For Fargo-Moorhead residents, today's forecast calls for warm and sunny - with a strong chance of ash leaves. Foliage is falling from metro-area ash trees in far greater amounts than usual, as the ...

The emerald ash borer, a tiny yet destructive invasive beetle, has been confirmed at six new locations in northern Oregon.

Spotty leaves, cracked trunks, mushroom invasions ... Two certified arborists explain how to best take care of your trees.

Q: I have a beautiful green ash tree in my front yard and hope to keep it protected from the ash borer as long as possible, but today I noticed a lot of leaves have fallen off. There are little dark ...

The discovery puts all of Multnomah County into a quarantine zone. It’s the fifth county to be quarantined in Oregon.

It is also used in some furniture applications. Ash trees have opposite, pinnately compound leaves. This means a single ash tree leaf is made up of several smaller leaflets that originate from a ...

In this episode of ID That Tree, meet the ash family, with specific focus on the white ash, which is typically found on higher and drier sites than its cohorts. This species, which is in trouble due ...

An invasive pest is quickly making its way across North Carolina, and it’s wreaking havoc on the state’s ash trees. The Emerald Ash Borer (EAB) first started ravaging the hardwood trees around the ...