I would think if your grapes will grow the hops should as well. Getting them to grow vertical will be a bit of a challenge but it is doable. Like ultravista said, shade cloth will help, I use it for my tomatoes and peppers. I got mine at home depot, comes in a roll, 6ft by 18 ft if I remember right. I also made a frame out of PVC and stretched the cloth over it. I recently moved and I have a block wall that is shaded year round and thought about trying to grow them there as well.