Fertilizer
Mini rose shrubs require regular fertilizing to continue blooming throughout the season. It is recommended to use a fertilizer specially formulated for roses. An all-purpose product works as well. Begin fertilizing in the spring when the first leaves appear.
Repeat after each abundant bloom. Make sure to follow the instructions on the packaging to determine how much fertilizer to apply. Stop feeding your roses six to eight weeks before the first frost.
Pruning
Pruning should occur in late winter or early spring before new growth arrives. Remove any dead or damaged wood and stems. Then, trim back no more than one-third of the plant to maintain its shape.
Potting and Repotting
Use a container that is six to eight inches deep and has drainage holes. It helps to layer gravel in the bottom of the pot to improve drainage. If you’re keeping your potted roses indoors, they may need additional humidity to survive.