Miracle-Gro Rose & Shrub Concentrated Liquid Plant Food is a specially formulated plant food for roses and shrubs. It contains a natural growth stimulant and has a unique mix of 5 nutrients with added iron to help plants establish strong roots, produce greener leaves and produce twice as many blooms as unfed plants. It can be applied around the roots and over the foilage to give fast acting results. Regular feeding, every 1 to 2 weeks, in Spring & Summer will give the best results and encourage strong and healthy plants.