Felix:
I have finally found something that deer won't eat: Colorado Blue Spruce trees. They won't touch 'em. This doesn't help you but out here in the west, whitetail mule deer have moved into most of the small towns and have discovered vegetable & flower gardens. It's quite a nuisance problem for the reasons Xair states. I live in a remote area up in the mountains in the natural habitat of wildlife. We have deer, moose, elk, back bear, fox, wild turkey and all the smaller animals grazing through the mountains around us. We don't have enough water to cultivate a garden of any kind but wildflowers are profuse. Unfortunately, when we go to town, we are driving through deer all the way to Main Street.
I was in a meeting last Saturday with a high ranking official from the state wildlife management agency and he begged people not to feed wildlife. He said that although it looks like you are helping, you are not and it negatively affects the balance of nature.
I have no answers for you, but I sure enjoy nature.