To give you a perspective of how tall that bush is, I'm almost 6 feet tall, and the lower level of the privacy fence is taller than me!
The only thing I used on that baby was Miracle Gro rose food. I think it grew so high because the house is surrounded by oak trees, so it only gets a lot of hours of sun if it gets tall enough (I'm not about to try moving that heavy oak barrel of soil, I can't even budge it). I might go over there later and try another rosebush and experiment. If it pans out to be true, I could plant a lot of them and probably get a pretty penny for them from the rich people in Westlake.
In my apt. I get full sun from east to west, my bushes are healthy but they bud instead of growing like crazy as this bush did.