I've never had much success with cuttings. The only thing I've found to work is to stick them in a glass of water until they sprout roots, and then pot them up. For all of the advise you see and read about cuttings, Carol Klein and her pots and grit and whatever, could it be that this is actually the best method? I suppose it can only work for softwood cuttings, but still, it seems more successful to me, yet none of the "experts" or books mention it at all. The exception is a basal stem cutting I took from a Dahlia a couple of weeks ago, which I did "by the book" and is very much enjoying life.