Corn rootworm hatch risks now envelop virtually the whole of the corn-growing region where this particular insect is found, with the exception of portions of North Dakota and northwest Minnesota where heat units have yet to accumulate enough to warrant a risk as of yet but even there, that will change in the coming week or so. The most widespread risks remain in the more intensive and further south acreages in Kansas, Nebraska, northern Missouri, Iowa, Illinois, southwestern lower Michigan, Indiana, and Ohio, with additional increased risks possible in South Dakota, Minnesota, and Wisconsin in the coming week. Moderate risks are found in the less intensive or more marginal acreage areas and also where heat unit accumulations are not yet high enough for a higher hatch percentage risk from eastern Colorado into western/northern Nebraska, the eastern Dakotas, northern and eastern Minnesota, much of Wisconsin, and into central and eastern lower Michigan as well as southwest Ontario, Canada. Growers in or near the risk areas are encouraged to dig up roots and determine local larvae populations.