Improves daylily bloom Improves daylily plant growth Beautiful blooms Grow healthy daylilies Daylilies thrive in rich, moist, and well-drained garden soils. Over time, soil nutrient levels become depleted, and should be replenished with each growing season. We recommend an annual regimen of our specially formulated Schreiner’s Iris Gardens 10-10-10 Fertilizer for the long-term health of your daylily plants. You will be rewarded with good plant growth and beautiful blossoms. Recommended application prior to bloom, and then again in late summer or early fall, depending on plant vigor. Application is also recommended at time of planting new divisions. The 1-lb bag typically covers approximately 25 newly planted daylilies when applied as directed.