MAG-I-CAL® PLUS Soil Food for Lawns in Acidic & Hard Soil

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MAG-I-CAL® PLUS Soil Food for Lawns in Acidic & Hard Soil is the product for your lawn if you need to RAISE the pH in your soil.

  • One 18 lb covers 5,000 sq ft
  • Analysis is 28% calcium, 1.5% sulfur, .5% iron
  • Fortified with highly soluble calcium carbonate, fast-acting gypsum, humates, iron, and amino acids
  • Great for RAISING the pH in your soil

Product Description:
Jonathan Green Mag-I-Cal Plus for Lawns in Acidic & Hard 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. When soil is compacted or too acidic, air, water, and nutrients are unable to reach the roots, making it very difficult for grass to flourish.

Lawns thrive in soil with slightly acidic to neutral pH levels ranging from 6.2 to 7.0. When pH levels drop between 4.0 to 6.0 weeds flourish and the grass becomes light green and spindly. Additionally, Mag-I-Cal Plus helps to break up clay and compacted soils. This improves root penetration and promotes growth by increasing biological activity and releasing nutrients trapped in the soil.

Please Note: This is the product we carry that will help to raise your pH. We have a similar product from Jonathan Green that will lower the pH.

Application Information:
 MAG-I-CAL PLUS Soil Food for Lawns in Acidic & Hard Soil is best applied during the growing season when the soil is not frozen. Spread the product on a dry lawn soon after mowing and for best results, rake the lawn vigorously prior to application. Irrigate the treated area after application for 15-30 minutes. Once watered, wait a day to mow the lawn to give the product time to activate.

This product is safe to apply when you are seeding or sodding and may be used on the following grasses: 
Cool Season Lawns - Kentucky Bluegrass, Turf Type Tall Fescue (all fescues), Ryegrass.
Warm Season Lawns - Bermuda, St Augustine, Zoysia, Centipede, Bahia.


An 18 lb bag will cover 5,000 sq ft

Application  Details

Apply at 3.6 lbs per 1,000 square feet of lawn area

For soils with a pH lower than 6, repeat applications twice a year

Water-In  Instructions

Apply to a dry lawn

For best results, water into the turf for 15-30 minutes

Sweep excess off sidewalks and driveways to avoid staining.

Product Resources:

  • Label: Magical Plus Acidic label
  • Spreader Settings:  See product package label
  • Package Includes: One 18 lb bag
  • Storage: Store in dry conditions away from moisture. Can be stored for up to 2 years.

Shipping Information:

Shipping Costs

Price does NOT include shipping, will be calculated at check out.  

NO P.O. Boxes 

State Restrictions

Alaska (AK), and Hawaii (HI)


Yes, free stickers with this item

Typical Delivery Time

4 - 7 business days

Product Type


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