Emerald ash borer
Understanding the impact of the emerald ash borer
The emerald ash borer is an insect pest that attacks ash trees in North America, causing their decline and death by feeding on their internal tissues.
The emerald ash borer is an insect pest that attacks ash trees in North America, causing their decline and death by feeding on their internal tissues.
The emerald ash borer, a highly destructive invasive beetle, attacks and kills ash trees of all species. This species has already decimated millions of trees in North America. It is recommended that dead ash trees be felled within 1 to 2 years of death to prevent the risk of falling.
The life cycle of the emerald ash borer generally spans 1 or 2 years. At maturity, the insect lays between 30 and 60 eggs on or under the bark of ash trees. After 2 to 3 weeks, the eggs hatch into larvae that burrow, feed and cause severe damage. When mature, ash borer larvae emerge from the tunnels, usually between May and June, leaving a characteristic “D”-shaped hole. They then feed on the leaves for about a week before laying new eggs.
Which trees are at risk?
The emerald ash borer mainly attacks the following species: black ash, Pennsylvania ash, American ash and blue ash. The insects tend to target already-weakened ash trees, particularly those larger in diameter. Although females may lay eggs on other tree species, the larvae generally do not survive.
The emerald ash borer has already decimated millions of trees in North America. Rapid felling is the best solution.
The need to act quickly
Unfortunately, there are few solutions if one of your trees is infected by the emerald ash borer. With an average life expectancy of around 2 years for infected trees, it’s crucial to act quickly to prevent spread. Felling ash trees is often the best option for protecting other trees. This operation is generally authorized from October 1 to March 15, except in cases of immediate danger. If you’re not sure whether your tree is in danger, consult a professional arborist to assess the situation.
With an average life expectancy of around 2 years for infected trees, it's crucial to act quickly to prevent spread.
If you have any doubts about the presence or health of ash trees on your property, our comprehensive service includes identification, consultation and detection to establish an accurate diagnosis. Once the work is complete, we'll provide you with a detailed analysis of your options. To benefit from the services and advice of one of our arborists to assess your situation or carry out the necessary work, please contact us.
