Posted: 05/07/2015 at 10:27
Yarrow, I use generic rose feed from Wilko. A generous handful in spring tickled into the soil and watered in, then a small handful after the first flush of flowers, leave it for 4 -- 6 weeks then another small handful. It's all I use in my, and in clients gardens. Container grown roses get the same treatment. A balanced rose fertilizer is all that's needed. If you feed too much you get lots of green growth and fewer flowers, so it's steady feeding really. In late winter a good mulch of FYM is beneficial as well.