You know, I have actually gotten tree trimmer crews to dump their chipper truck in my driveway for just this purpose. Cheaper for them, especially if they're working in the neighborhood anyway, because otherwise they have to pay to dump them at places like Greencycle, and it's free mulch for me.You could buy a chipper/spreader for your limbs/ branches and put it around your rose bush's, cause rose bush's like that you know.