How to Fertilize Miniature Roses
- 1). Choose an appropriate fertilizer for roses like a 9-18-9 granular fertilizer, an 18-24-16 water-soluble fertilizer or a 5-10-5 general use fertilizer. The numbers indicate the percentages of nitrogen, phosphorus and potassium in the product.
- 2). Measure fertilizer according to manufacturer's instructions. Dissolve water-soluble fertilizer in water measured according to the label's directions.
- 3). Apply fertilizer to the soil. Sprinkle granules on the soil in a ring around the miniature rose bush, leaving a couple of inches between the fertilizer and the plant, or water plants with the fertilizer-water solution. Work dry fertilizer into the top 4 inches of soil and moisten the soil with water.
- 4). Re-apply fertilizer once a month while the miniature roses are blooming. To keep nutrients more steadily available, apply half the recommended amount twice a month instead.
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