They have never bothered my garlic and it is not a daily mantained crop requiring lots of water. But it is not the best time to plant garlic and i doubt you would want a 3 acre field of it but maybe you could plant a couple rows.

Deer resistance seems to be based on the population of the deer. Just like us: if we are hungry enough, we'll eat things we wouldn't likely eat otherwise.
Having said that, they seem to not eat rhubarb, asparagus and onion family members including garlic. Most of the rest is a gamble. I think they will eat some of your pumpkin leaves plus the fruits if the deer become numerous enough.
This is a question we all struggle with. I've fenced in about three acres, and now have problems with woodchucks and moles/voles, because nothing can get them that would be their natural predators!
Good luck.
Ann