K-mag Granular
K-mag Granular - 10 lbs is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Care information
Care information
Please store this product in a temperature and humidity controlled environment, preferrable out of direct light.
Delivery and Shipping
Delivery and Shipping
We ship same day if the order is placed before 3 pm.
K-mag Granular
100% natural Langbeinite, a long-lasting, readily available source of low-chloride potassium (22%), magnesium (11%), and sulfur (22%)
Description
Description
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.
Â
Â
Â
Reviews (3)
Reviews (3)
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Product features
K-Mag, or potassium magnesium sulfate, is a fertilizer that contains three water-soluble nutrients: potassium, magnesium, and sulfur.K-Mag is 100% water soluble and can be used immediately after application if there is enough moisture in the soil.
Product comparison grid
Discover the Benefits of Different Product Options and Make an Informed Purchase.
| Facet | ||||
|---|---|---|---|---|
| By | ||||
| By | The Soil Makers | The Soil Makers | The Soil Makers | The Soil Makers |
| Price | ||||
| Price |
From
$ 30.00
Unit price
/
Unavailable
|
From
$ 28.00
Unit price
/
Unavailable
|
$ 15.00
Unit price
/
Unavailable
|
From
$ 10.00
Unit price
/
Unavailable
|
| Description | ||||
| Description | K-Mag Granular is a naturally mined fertilizer that delivers three essential nutrients in a single granular blend: 22% sulfur (S),... | Potassium is essential for a vigorous root system, plant growth, disease resistance, as well as fruit and vegetable quality. SOP... | Magnesium Sulfate Epsom Salt Technical Grade - Mg 9.8%, S 12.9%. Quick acting Magnesium & Sulfur fertilizer. Can be used for... | Elemental Sulfur — Pelletized sulfur to correct sulfur deficiencies and lower soil pH, ideal for blueberries and all acid-loving plants.... |
