Jonathan Green’s Mag-I-Cal® for Lawns in Acidic Soil contains calcium carbonate in a completely soluble form that is immediately available to adjust soil pH upwards. Poor soil is often the problem in growing a great lawn and calcium is vital to many grass plant functions.
Lawns thrive in soil with pH levels between 6.2 and 7.0. When the pH level of the soil is below this range grass becomes light green, weeds persist, and fertilizer nutrients are not fully absorbed. Mag-I-Cal® Plus also contains humates to stimulate soil microbial life. When soil chemistry and biology are balanced, nutrients from lawn foods are not wasted and the grass will thrive.
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.If your pH is below 7.0, apply Mag-I-Cal for lawns in acidic soil:– If pH is 6.0 – 6.4, apply MAG-I-CAL once a year– If pH is 5.6 – 5.9, apply MAG-I-CAL in the spring and fall– If pH is 5.1 – 5.5, apply MAG-I-CAL every other month until pH is above 5.5, then follow above suggestion– If pH is 5.0 or below, apply MAG-I-CAL at 1.5 times the regular rate for three consecutive months.– Two weeks after the third application, test pH then adjust application schedule accordingly.