Encourages Healthy Growth & Produces Bigger Blooms Quick & easy to feed. Ideal for all plants indoors & outdoors Especially good for roses Easy to use 1Kg bottle Doff Rose & Shrub Controlled Release Fertiliser is presented in a 1 Kg easy to use granular formulation of a blend of slow releasing granules plus fast acting plant food providing nutrients when plants need it most. A special mix of NPK ideal for use on roses to bring out the best blooms.