MANAGING AND PREVENTING JAPANESE BEETLE DAMAGE

Japanese beetles have been in the United States nearly 100 years, but have moved to the Midwest more recently, where they are found to be fairly common. Japanese beetle populations are damaging plant material across Omaha, including Linden trees.

These leaf miners feed on plants and lay eggs throughout the summer. Come spring, when soil temperatures warm up, grubs move up toward the soil surface and continue feeding on grass roots. Grubs mature from late May through June. Adult beetle activity commonly peaks during mid-July through the first two weeks of August.

The key to controlling adult Japanese beetles is to use a material that either repels the adult beetles from feeding or kills them quickly before they can inflict much damage to the trees and other foliage. Once Japanese beetle adults start damaging foliage, additional beetles will detect the wounded plant tissue, attracting them to feed on the plant. A slow-killing pesticide will allow the adult beetles to cause a fair amount of damage and increase the feeding aggregation of other adult beetles on the plant.

Our preferred practice by our tree service experts is a soil drench in early spring as a systemic insecticide. This is a one-time treatment at the base of the tree and covers for a full season. While the bugs can still feed on the leaves, they will die before too much damage occurs. This method is preferred over spraying because there is no risk of over spray into the atmosphere and typically costs less.

ABS Tree Care of Omaha employs an Integrated Pest Management (IPM) system, an effective and environmentally sensitive approach to pest management services that relies on a combination of common sense practices. Our tree service experts can study the overall system of your trees, and diagnose the problem in the least invasive and safest manner.