I prefer organic rose food which is in granular form. Most nurseries sell this type of product. It works for a long time without burning the roots or shocking the plants. I have never used any soluble product by Miracle Grow (their rose food) on my plants and prefer not to 'risk' them. If you're a risk taker, then give it a try and please let us know your results.
Suzy

Like Suzymac, I only do organics, but I also check my soil pH occasionally (I have a professional one since I have so many roses, etc, given to me as a gift for Christmas by my children who knew I would love it). If my soil pH is too low, I will throw some agricultural lime to them, but I use organics such as alfalfa, cotton gin trash, horse and cow manure, and the occasional Milorganite which I use on the lawn, of course, lands in the clematis when using a spreader). I top dress with mushroom compost or composted manures, but I DO NOT USE MIRACLE GROW. I worked too hard to get my soil in good condition.