Insect Alert For

Corn Earworm

Risk Level:
Low Risk
Affected Area:
Full page
Alert Details

Mainly isolated corn earworm migration risks are predicted on a nightly basis throughout this week, especially mainly in the western and central corn-growing region, as a persistent south to southwesterly wind pattern remains in place. Low pressure will continue to organize in the southern Canadian prairie region as high pressure slowly drifts off to the east and southeast as the week goes on. Initially, Low migration risks are predicted mainly west of I-35 at the beginning of the week but they do expand eastward as far as Lake Michigan and into much of Illinois by late week and next weekend as a cold front pushes southeast. There is some disagreement in just how quickly a cold front passes through at least a portion of the corn-growing region late this week, so this will be something to monitor going forward. The primary threat from any early-season moth flights at this point is mainly with fresh market and produce/garden growers and host vegetables that may be at critical growth stages as field corn is not at a susceptible stage to damage as of yet.