The Emerald Ash Borer (EAB) is an invasive insect responsible for killing millions of ash trees across North America and is well established throughout East Tennessee, including Knoxville. If left untreated, most infested ash trees will eventually die.
Signs of Emerald Ash Borer Infestation
Homeowners should watch for these common symptoms:
- Thinning leaves or dead branches in the upper canopy
- Excessive sprouting from the trunk or base of the tree
- Increased woodpecker activity
- D-shaped exit holes in the bark
- S-shaped tunnels beneath the bark
Because early symptoms can be difficult to recognize, many infestations are not discovered until significant damage has occurred.
Can Ash Trees Be Saved?
Yes. Healthy ash trees or those showing only early signs of infestation can often be protected with professional trunk injection treatments. Early treatment is critical and can preserve valuable shade trees for years.
When Should an Ash Tree Be Removed?
Trees with extensive canopy loss, large dead limbs, or structural decline may need to be removed to prevent property damage or personal injury. Dead ash trees quickly become brittle and hazardous.