September 10, 2024

September: Final Fertilization and Division Apply the final fertilizer of the year to lawns and young trees with an 8-8-8 or 10-10-10 blend to increase cold hardiness. Avoid pruning poinsettias after September 10 to preserve their December blooms. Divide bulbs and daylilies to promote blooms and reduce competition, and replant amaryllis immediately. Inspect hibiscus, gardenias, and Indian hawthorn for scale insects to keep them healthy.