High corn rootworm hatch risks are now in place from southern Kansas northeast into southern and eastern Nebraska, southern and central Iowa, Missouri, much of Illinois, Indiana, and Ohio where more widespread hatches are now possible. Moderate risks are found to the north of the High risk area where heat unit accumulations have recently met or exceeded threshold values for initial hatch risks, and where scattered corn rootworm populations are expected at this time. The Moderate risk area extends from eastern Colorado into northwest Kansas, portions of central and northeast Nebraska, central and northern Iowa, far northern Illinois, southern Wisconsin, and further north into lower Michigan as well as into southwestern Ontario, Canada. Additional hatches will be possible in northern Nebraska, southeast South Dakota, southern Minnesota, and additional areas of Wisconsin and lower Michigan by next week. Growers in and near the risk areas are encouraged to dig up roots and monitor more advanced crops for signs of corn rootworm damage.