Miniature roses are technically rose plants, usually of the Rosa chinensis variety, that produce blooms 1½ inches in diameter or less. Most miniature rose plants only grow to be about 6 to 18 inches tall, but climbing varieties can grow up to 5 feet. Miniature rose plants make excellent potted plants and if placed on a table or another raised surfaces, are more visible to the average person for enjoyment. They also grow well in window boxes, hanging baskets, small outdoor spaces and along borders, and are simple to care for.
Fertilize your miniature roses once a month with a liquid balanced fertilizer, such as one labeled 10-10-10. However, using a slow-releasing fertilizer twice a year will suffice. Always follow label directions for proper dosage and the best application method.
Pinch off spent blooms. This will encourage more blooms to grow and for a longer period.
Prune your miniature roses once a year in the early spring before new growth begins. Use hand clippers and clip off half the plant's height. In fact, you can cut the miniature roses all the way to just above the first-outward facing buds. Major yearly pruning will result in more blooms and more lush plants.
Cut off diseased, damaged and dead stems anytime. During the growing season (spring until fall), you can also prune to shape anytime, if desired.
Apply an insecticide labeled to kill pests such as spider mites and whiteflies. To help protect your plants from insects, keep the area under your plants clean of debris, including flower and leaf droppings, and clean indoor plants with a wet rag each week. Wipe the top and underside of the leaves to help keep the pests away.
Spread a 2- to 4-inch layer of mulch, such as wood chips, around each plant in the winter to maintain more even soil temperatures if you live in a USDA plant hardiness zone colder than zone 10. Bring potted miniature rose plants indoors during the winter if the roses are not rated in your zone.