By 1972, beetle infestations had been reported in 22 States east of the Mississippi River and also in Iowa and Missouri. Since then, the pest has continued to disperse south and west. Isolated infestations have been found in Wisconsin, Oregon, and California. Without its natural checks and balances, the Japanese beetle has become a serious plant pest and a threat to American agriculture. Adults feed on the foliage and fruits of several hundred species of fruit trees, ornamental trees, shrubs, vines, and field and vegetable crops.
Adults leave behind skeletonized leaves and large, irregular holes in leaves.
The grubs develop in the soil, feeding on the roots of various plants and grasses and often destroying turf in lawns, parks, golf courses, and pastures. Today, the Japanese beetle is the most widespread turf-grass pest in the United States. This map shows the parts of the United States currently infested by Japanese beetles. Click here to receive up to four Free estimates from prescreened and insured contractors. Easily Become a Master Gardener with Pre-Designed Gardens.