Summertime bloomers which include lilies require minor supplemental fertilizer given that soil is balanced. If wished-for, work bulb fertilizer in to the soil close to vegetation in early spring. Cover crops decay and break down to include nitrogen to the existing soil. They could also group out unwanted weedy development. https://brooksxnetk.tinyblogging.com/the-smart-trick-of-micronutrient-fertilizers-export-uae-to-india-that-nobody-is-discussing-80990669