NEWSHOOTER, the corn should be ready for deer to use by then, unless it's been a really bad growing season. And the deer will keep using it until the farmer cuts it, which is usually anywhere from early to late fall. Some even keep some (I imagine for the deer to use) into the winter. I'd say that deer will more or less be using the corn fields from the time it grows kernels, to the time it gets cut (and even for a while after it's cut).

peashooter