Emerald Ash Borer Symptoms Colorado

Signs of Infestation for Emerald Ash Borer

Initial detection of Emerald Ash Borer in ash trees is difficult. Emerald Ash Borer Symptoms Include:

1. Canopy dieback beginning at the top of the tree progressing downward until the tree is bare.

Swingle Lawn, Tree and Landscape Care- Emerald ash borer infested tree canopy dieback

 

2. In later stages of infestations, ash trees may form sprouts from the trunk and roots.

Swingle Lawn, Tree and Landscape Care- Emerald ash borer- ash tree form sprouts from trunk and roots

 

3. Bark can split, exposing “S”-shaped galleries underneath.

Swingle Lawn, Tree and Landscape Care- Emerald ash borer creates bark spliting with s shaped tunnels

 

4. Although difficult to see, the adult beetles leave a “D”-shaped exit hole in the bark, roughly 1/8 inch in diameter, when they emerge.

Swingle Lawn, Tree and Landscape Care- Emerald ash borer adult beetles leave a D shaped exit hold in the bark

 

5. Woodpecker activity and damage increases where they are trying to get to the larvae in the tree.

Great Spotted Woodpecker (Dendrocopos major)

 

 

Treat Your Ash Tree Now- It may take up to five years for the canopy of an infested ash to thin and decline. Since borers infest the upper branches of the tree, the “D”-shaped holes cannot be seen from the ground until the tree is severely infested. If your ash tree is showing

emerald ash borer symptoms or appears unhealthy, contact a Swingle professional. If you would like to learn more about emerald ash borer treatment options to protect your ash trees click here.