The miniature rose is a true rose, the result of hybridizing the dwarf Chinese rose Rosa chinensis minima. Miniature rose plants look like the garden-grown rose except with leaves, canes and flowers scaled down to size.
They can grow to a height of 12” to 14” and make excellent potted plants. They will do well indoors and can bloom early spring to late summer if given proper care.
Miniature rose plants need as much light as possible – a sunny windowsill is best. They will not bloom without 4 or more hours of direct sunlight per day or bright, indirect light for 14-16 hours per day. If this is not possible, after hours of supplemental fluorescent lighting should be given with the plant placed 4-6” from the light source.
During the growing season, temperatures of 50ºF. to 75ºF. are best with good air circulation (near an open window if possible). Provide extra humidity by misting frequently or placing the pot on pebbles in a tray with water added to a level just below the tops of the pebbles. If you desire, the miniature rose plant may be grown outdoors in a partially shaded area during the growing season. Do not expose to temperatures below freezing except when the plant is dormant and undergoing its winter rest period.
Water liberally during the growing season, allowing the top one half inch of soil to become moderately dry before rewatering. During the rest period, water only enough to keep the soil from drying out completely.
Winter Rest Period:
During the fall and winter months, your rose will need to be placed in a cool location with temperatures kept below 45ºF. During this period, your plant will most likely lose all its leaves, so lighting is unimportant. You may overwinter your rose outdoors where temperatures do not drop below minus 10ºF. In severely cold climates overwinter in a cool, unheated room.
In February, prune the plant and repot it into the next size larger pot using a houseplant soil mix. Move to an indoor growing season location as described previously.
In spring, in climates where minimum temperatures do not drop below minus 10ºF., you may plant your rose outdoors in an area, which will receive full or partial sun.
Prune back the branches to one half their length at the end of the winter rest period. Make cuts above the growth buds, which are located on the outer sides of the branches. To prolong the flowering season, remove faded blooms by cutting them off two inches below the flower.
During the growing season, apply a liquid flowering houseplant fertilizer once every two weeks or as directed by the label instructions.
Insects and Disease:
Miniature roses are susceptible to aphids, and spider mites. Spray with a houseplant insect spray following label instructions or wash the foliage with warm soapy water and rinse well to dislodge insects and mites.
Powdery mildew disease may appear on the leaves, stems and flower buds, covering all or parts of them with a fine, powdery growth of white mold. Giving your plant plenty of sunlight and good air circulation will help prevent this disease. If the disease develops, spray with a rose fungicide following label instructions.
Plant material such as this product should not be eaten. While most plants are harmless, some contain toxins.