A spreader is designed to evenly fertilize your lawn with nutrients it needs for growth， color， root strength and overall health. The active ingredients in lawn fertilizer are important for plant growth， root vitality and overall lawn health. Late summer and early fall are the best times of the year to fertilize our lawn. The summer is an excellent time to give your lawn a healthy boost. In the fall fertilizing gives your lawn extra strength to help it through the winter. The Agri-Fab 85 lbs. Pro push spreader provides a long-lasting fertilizer， grass seed or ice melt spreader. This spreader features precise coverage of up to 10 ft. W. The spreader also comes with a recommended settings chart according to your job and spreading material.