It's a water-soluble fertilizer with high effectiveness specifically for flowering plants: the high content of phosphorus and potassium and the complete pool of micronutrients are a boost of concentrated energy for all annual and perennial flowering plants, in pot and in the soil. EC Fertilizer NPK 10-16-25 +15 SO3+B+Fe+Mn+Zn for flowering plants. Use: the product can be used dissolved into water, on the soil or through the foliage, and as such directly on the soil.