Minnesota's Department of Agriculture is releasing wasps in areas with known emerald ash borer infestations, hoping to slow the spread of the deadly pest.

Syria’s wildfires are the first major natural disaster since the country overthrew the al-Assad regime in December.

Anthracnose is a common spring disease on maple trees. Several different fungi can cause the symptoms we describe as anthracnose.

The Oregon Department of Forestry is warning Oregonians about an invasive species of beetle that could emerge this summer.

If your ash tree’s canopy is thinning, bark is flaking off in patches, or woodpeckers are suddenly interested in your trunk, ...

An invasive beetle that kills ash trees has made it to the Nashville area. As a result, up to 13% of Tennessee's trees could ...

DNA sequencing shows young trees are more likely to have gene variants that confer partial resistance to a fungus that has been wiping out ash trees across Europe ...

Ash trees in the UK are rapidly evolving resistance in response to ash dieback disease, DNA sequencing of hundreds of trees has shown. The finding is good news, says Richard Buggs at the Royal ...

Question: My ash tree and sycamore tree are losing leaves, which are somewhat disfigured and have blackened areas on the leaves. What should I do? Answer: Recent rains have led to a buildup of ...

The emerald ash borer, believed to be the most destructive insect ever to afflict trees in North America, has been confirmed for the first time in Omaha.