K-Mag Granular – Langbeinite Potassium Magnesium Sulfate Fertilizer

Natural Triple-Nutrient Fertilizer for Sulfur, Potassium & Magnesium

K-Mag Granular is a naturally mined Langbeinite fertilizer that delivers three essential plant nutrients in one convenient blend: 22% sulfur (S), 21.5% potassium (K), and 11% magnesium (Mg).

This mineral-based soil amendment provides a reliable source of key nutrients that support strong root development, healthy foliage, and balanced plant growth. Because the nutrients are readily available, K-Mag works well for both early plant development and ongoing soil nutrition programs.

K-Mag is OMRI-listed for organic gardening and is commonly used in living soil systems, organic gardens, and soil rebuilding projects. Its pH-neutral formulation ensures it will not alter soil pH, making it safe for long-term soil improvement without disrupting existing soil chemistry.

The granular format allows for easy and precise application in garden beds, containers, raised beds, and lawns.

Key Benefits

• Provides three essential nutrients: sulfur, potassium, and magnesium

• Supports root development and plant vigor

• Helps improve nutrient uptake and plant metabolism

• OMRI-listed for organic gardening

• pH-neutral formula that will not alter soil pH

• Granular form for easy, even soil application

• Ideal for organic soil systems and soil rebuilding

Works Well With

• Living organic soil systems

• Organic potting mixes

• Neem cake and other natural soil amendments

• Microbial and probiotic soil inoculants

K-Mag integrates easily into organic nutrient programs and helps strengthen the soil food web while supporting consistent plant nutrition.

Specifications

• Sulfur (S): 22%

• Potassium (K): 21.5%

• Magnesium (Mg): 11%

• Source: Naturally mined Langbeinite

• Certification: OMRI Approved for organic use

• pH Impact: Neutral — will not change soil pH

• Brand: The Soil Makers