Hi-YieldŽ Fast Acting Lime - 4 lbs. - helps increase the pH of acid soils, while also creating a proper soil environment. Fast Acting Lime will help green up the turf by boosting the effectiveness of fertilizer, increase the availability of nutrients, reduce weeds and moss, increase seed establishment. Use on lawn, vegetable garden, flower garden, and ornamental beds. Apply any time of year. Active ingredient: Lime.