K-Mag Granular is a naturally mined fertilizer that delivers three essential nutrients in a single granular blend: 22% sulfur (S), 21.5% potassium (K), and 11% magnesium (Mg). This Langbeinite-based formulation supports robust early growth and steady nutrient availability, making it a reliable choice for organic gardening and soil rebuilding. It is OMRI-listed for organic use and designed to work with your existing soil without altering its pH.

• Rich source of sulfur, potassium, and magnesium to support strong roots, healthy foliage, and steady nutrient uptake
• OMRI-listed for organic gardening and soil amendments
• Granular format for precise, easy-to-measure applications
• PH-neutral performance — won’t change your soil’s pH
• Ideal for seedling starts, germination mixes, and soil reamendment projects

Why it works in your system:

• Integrates smoothly with living organic soils and probiotic soil inoculants to bolster the soil food web
• Pairs well with Neem cake, organic potting soils, and other natural amendments to create a balanced, nutrient-rich base
• Versatile for use in containers, raised beds, and garden plots needing a targeted boost of S, K, and Mg

Specifications and trust signals:

• Nutrients: Sulfur 22%, Potassium (K) 21.5%, Magnesium (Mg) 11%
• Certification: OMRI approved for organic use
• Soil compatibility: remains pH-stable and non-acidifying
• Brand: The Soil Makers

What customers are saying: average rating 5.0 from 3 reviews, reflecting consistent performance and satisfaction with soil reamends and early-stage plant vigor.

K-Mag is a naturally mined product that has readily available 22% S. (Sulfur), 21.5% K (potassium) & 11% Mg. (magnesium)

This product is OMRI approved.

This product will not change the soil PH.