Truck & Chipper W Tree in background

Carpenter Costin Blog

Winter Moths are Coming

We are all excited that May will be bringing us beautiful flowers; however, May also brings us nasty, unwanted Wintermoths. These larvae (worms) hatch and feed ravenously on leaves beginning mid-May. They feed on leaf clusters and inside buds during the day, and inch their way to the outside of leaves at night. In June they stop feeding and drop down to the ground and bury themselves in the soil until fall.

In October and November adult males emerge to mate. It is common to see them flying around your porch lights in the evening at this time of year. The females, who have no wings, climb up tree trunks and lay eggs in bark crevices for the start next season’s moths.

Treatments of Wintermoths begin in May, and can control the winter moth larvae population, and mitigate the risks to your trees. Wintermoth treatment methods include foliar application and micro injection, available in both biological and traditional controls.

If you have had Wintermoth damage in the past, it is recommended that you speak with an arborist to determine an appropriate Wintermoth insect management strategy. Control these pests in the spring to prevent year-long pest damage to your trees.

Asian Longhorned Beetle Decimates Local Trees

Invasive Insects Threaten Hardwood Trees

The Asian Longhorned Beetle (ALB) is an invasive insect from Asia that is a serious threat to hardwood trees (trees that lose their foliage after growing season) in the United States. These trees include maple, elm, willow, birch, horsechestnut and poplar. During its infant stage, the insect bores into a tree's heartwood and feeds on the nutrients. The tunneling can cause extensive damage, which will eventually kill the tree. The insect is approximately 1 - 1.5 inches in length with antennae as long as the body itself. Although they can fly up to 400 yards, they tend to lay eggs in the same tree they emerged as adults.

The Adult female, active primarily during the summer and early fall, can chew 35 to 90 depressions into the bark of the host tree. One egg is laid at each site, which hatches in 10-15 days. The resulting offspring tunnel into the woody tissue of the tree, where it feeds and continues to develop over the winter. In the spring, the offspring build a hard case to develop in. When summer comes, they chew their way out of the tree leaving perfectly round exit holes of ¼ to ½ inch. They then feed on the leaves and twigs of the tree, before starting the cycle over again.

Getting rid of the beetles is primarily accomplished through detection and removal of the host tree. If you encounter these beetles, you are urged to contact the U.S. Department of Agricultures' (USDA) local Animal and Plant Health Inspection Service (APHIS) Director, who can be located at the following website:

In Massachusetts, you can also contact The ALB Program at 508.799.8330 or toll free at (866) 702.9938.Qualified Arborists can provide preventative treatments to non-infested trees through a 3-year program of tree or soil injections. The chemical treatment disperses into the tree and travels into twigs and leaves so infant stage and adult beetles ingest the chemical and die.

To find out more about a preventative 3-year treatment program to protect your properties trees, contact Carpenter Costin at or call (877) 308.8733.

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