Mag-I-Cal Plus Soil Food for Lawns - Raises pH & Loosens Hard Soil

Our review of Mag-I-Cal Plus Soil Food finds it best for homeowners battling compacted, acidic lawns who want a straightforward soil amendment that helps fertilizer work better. The single biggest reason to buy is its ability to rapidly and efficiently raise soil pH while supplying readily available calcium, which together improve nutrient uptake and revive light green, struggling turf. It is presented as a 54 lb bag covering up to 15,000 sq. ft, so it suits medium to large yards and seasonal applications in spring, summer, or fall.

Key Features

• Raises soil pH: Corrects acidic soil toward the desirable pH range so grass can absorb nutrients from fertilizer more effectively.
• Loosens hard soils: Helps break up clay and compacted soils to improve root penetration and increase biological activity in the root zone.
• Encourages nutrient absorption: Balances soil chemistry so applied fertilizer is less likely to be wasted and more likely to nourish the grass.
• Contains calcium: Supplies plantavailable calcium that supports essential grass functions and aids pH adjustment.
• Complete coverage: One 54 lb bag treats up to 15,000 sq. ft, suitable for larger lawn areas and repeat seasonal use.

Who It's For

Mag-I-Cal Plus is aimed at homeowners with lawns on acidic or compacted soils who see pale, light green turf or persistent weeds indicative of low pH and limited nutrient uptake. It is also a practical choice for those who already use lawn fertilizer but suspect poor results due to unsuitable soil chemistry.

Those who should look elsewhere include gardeners needing a broad nutrient fertilizer blend or users who require pH adjustment for ornamental beds with plants preferring strong acidity; this product is formulated for lawn pH correction and soil conditioning rather than general fertilization.

Pros & Cons

Pros

• Effectively raises soil pH, improving fertilizer efficiency and grass color when pH was too low.
• Helps break up clay and compacted soils so roots can penetrate and biological activity can increase.
• Provides calcium in a form available for plant uptake, supporting turf health beyond simple pH change.

Cons

• Not a complete fertilizer; users will still need to apply lawn fertilizer for nutrients beyond calcium and pH correction.

Specifications

Brand	Jonathan Green
Product type	Soil amendment for lawns
Bag weight	54 lb
Coverage	Up to 15,000 sq. ft
Primary benefit	Raises soil pH and loosens hard soils
Key nutrient	Calcium
Best application times	Spring, summer, or fall

Our Verdict

Mag-I-Cal Plus is a practical, cost-effective soil amendment for lawns on acidic or compacted ground; it raises pH, supplies calcium, and helps loosen hard soils so fertilizer becomes more effective. Homeowners seeking improved turf color and root development will find it good value when used alongside regular lawn fertilization.

Frequently Asked Questions

How much area does one bag cover?
One 54 lb bag covers up to 15,000 sq. ft according to the manufacturer.

When should I apply Mag-I-Cal Plus?
Apply in spring, summer, or fall; test soil pH first to determine the need and rate of application.

Will this replace my lawn fertilizer?
No, it is a soil amendment that improves pH and calcium levels; you should continue regular fertilization for complete nutrient needs.