Jonathan Green (11353) Mag-I-Cal Soil Food for Lawns in Acidic Soil - Soil Amendment for Grass (5,000 Sq. Ft.) MAG-I-CAL for Acidic Soil is a highly soluble form of calcium that helps to rapidly raise your soil?s pH, improving the health of your lawn by releasing trapped nutrients in the soil that feed the grass plants. MAG-I-CAL can be applied anytime during the growing season. One bag of MAG-I-CAL equals up to fifteen bags of limestone, saving you time, money, and your back. Mag-I-Cal is best applied anytime during the growing season when the soil is not frozen. It can be applied on the same day with any other lawn product applications or when seeding or sodding. Mag-I-Cal is a completely natural product and will never burn your lawn. Features Rapidly raises Soil pH and aids in water uptake Natural Soil Food is completely safe to use where children pets play Boosts lawns color reduces stress improves soil texture 20 percent to 70 percent of your lawn food is wasted when soil pH is to low One 5M bag equal 5 bags of pelletized lime USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.