Jonathan Green's Mag-I-Cal Plus for Lawns in Alkaline & Hard Soil contains sulfur and calcium sulfate dihydrate which lowers soil pH, is important to cell development and is vital to many grass plant functions. Poor soil that is hard and compacted is often the problem when it comes to growing a great lawn. When soil is too alkaline and compacted, air, water and nutrients cannot get down to the roots and the grass will not grow properly. Lawns thrive in slightly acidic to neutral soil with pH levels between 6.2 and 7.0. In soils with pH readings of 7.0 to 9.5, weeds thrive 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.

• Brand Name: Jonathan Green
• Sub Brand: Mag-I-Cal Plus Alkaline
• Fertilizer Analysis (N-P-K): 0-0-0
• Primary Usage: Annual Program
• Product Type: Lawn Fertilizer
• Grass Type: All Grasses
• Coverage Area: 5000 sq ft
• Phosphorus Free: Yes
• Organic: Yes
• Suitable for Vegetables: No
• Water Soluble: No
• Packaging Type: Bagged
• Application Season: All Season
• Safe for Bermuda Grass: Yes
• Lawn Project: Feed Your Lawn
• Region: Multi-Region
• Size of Lawn: Medium (4001 - 9999 sq ft)
• Product Form: Granules
• Container Size: 18 lb
• Application Conditions: Dry
• Iron Included: No
• Pre/Post Emergent: Pre Emergent
• OMRI Certified: No
• Application Temperature Range: Minimum 45 F
• Apply to Dry or Damp Lawn: Dry
• Safe for Children & Pets: Yes
• Application Method: Spread
• Can Be Used When Seeding: Yes