RoseGain 12-6-13 Rose Plant Food is for growers wanting to achieve big, bold and beautiful blooms. It provides heightened growing power that leads to strong root development, nutrient rich stems, and large vibrant flowers. Slow-release nitrogen and high levels of potassium create growing conditions for roses, some perennials and annuals. Your soil should provide excellent root aeration and be slightly to moderately acidic for best nutrient uptake. RoseGain is great for perennials, annuals and all flowers. Also, it is for use on English, Teas, Hybrid Teas, Climbing Roses and Miniature Roses.