I have had clover food plots for a long time. In my experience around the section I hunt, the deer are distributed pretty widely all across the section and feed on acorn (when available) corn and of course soybeans as well as some that hit my clover plots when they get up in the late afternoon. They then usually move on to other food sources. But as the season progresses and the corn, soybeans and acorns are no longer available, more and more deer hang out around my clover plots. In the late season when it is getting very cold and snow covers the ground, herds of deer are parked within 50 yards of the clover and dig at it the remainder of the winter. So in short, clover becomes more and more attractive the colder it gets.