Espoma Flower Tone Fertilizer is a slow release, organic and natural and will help you to get more blooms from your favorite flowering plants! Flower-tone is a premium organic fertilizer that is low in nitrogen and higher in phosphorous and potassium to maintain good plant growth and promote blooms rather than heavy foliage. Flower-tone's natural organics breakdown gradually providing a long lasting nutrient reservoir activated throughout the growing season. Flower-tone's all natural formula contains Bio-tone®, our proprietary blend of beneficial microbes. Bio-tone biologically enhances our natural organic fertilizer to ensure superior plant growth.