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MAG-I-CAL® Calcium Fertilizer

MAG-I-CAL® 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.

Low soil pH causes weeds, moss, and bare spots to grow, while soil pH ranging between 6.0 – 6.8 will re-energize your lawn, increasing microbial activity, boosting your lawn’s color, reducing stress, improving soil texture and aiding in water uptake. Using MAG-I-CAL® will also significantly improve your fertilizer’s effectiveness for a thicker, greener lawn with improved weed control.

MAG-I-CAL® comes in an easy to spread pellet form, can be applied anytime during the growing season, and is safe throughout the yard. MAG-I-CAL® is also concentrated, meaning one bag of MAG-I-CAL® equals up to ten bags of limestone, saving you time, money, and your back!

MAG-I-CAL® is the missing ingredient in your lawn care program that makes everything else work better!  Learn more: the importance of pH!

Product Label

This product is available in the following bag sizes:

4.5 lb. (1000 sq. ft.)
22.5 lb. (5000 sq. ft.)
45 lb. (10000 sq. ft.)

Spreader Settings

The spreader settings listed are approximate. Spreader condition, rate of walk, and humidity are just some of the variables that can affect the rate of application. Please refer to the product label link on this page, or the back of the bag, for further details along with application rates and precautionary statements. You may need to adjust settings for proper coverage if circumstances described on the label are applicable. In all cases, the user should read and follow label instructions before applying any product, and assumes all responsibility when using this spreader settings tool.