Product Description
Solution Grade MAGNESIUM POTASH and SULFUR Powder.
Also known as KMAG SUL-PO-MAG and KMS.
22% Potassium with 11% Magnesium 22% SULFUR in a solution grade powder.
Perfect for adding Magnesium Potassium and sulfur to growing plants in any growing application.
We use this product in bulk for a variety of agricultural uses. We re-package the product in smaller re-sealable bags.
Directions For Use
As a soil applied fertilizer or nutrient:
Dissolve 2-4 dry ounces in 1 gallon of water. Coverage is 100 – 500 sq. ft.
As a folier application:
dissolve 1 dry ounce in 1 gallon of water.
21-22% POTASH (K2O) (18.2% POTASSIUM: K) — K is known as the “quality” nutrient. A good source of K, K-Mag promotes healthy root systems, increases plant vigor and resistance to disease and cold. K is also essential in sugar and starch formation, and the movement of nutrients through plants.
10.5-10.8% MAGNESIUM (Mg) (18% MAGNESIA MgO) — Mg is the central component of chlorophyll, the pigment molecule responsible for absorbing sunlight during photosynthesis. Providing Mg and K in the proper balance, K-Mag helps increase plant strength and builds resistance to winter kill, drying, insect attack and spray damage.
21-22% SULFUR (S) (67% SULFATE: SO4)— S helps build proteins in plants and is a key component of many unique traits. S puts the “green and leafy” into crops like spinach, while giving garlic and asparagus their distinctive flavors and improves the baking quality of wheat. S deficiencies are of particular concern as sulfur dioxide emission- reduction programs cause less S to be returned to the soil via the atmosphere. K-Mag provides an adequate supply of S for healthy crop production. Because it’s in the sulfate form, it aids initial root growth — important in rapidly growing crops — and promotes seed production and vigorous plant growth.
High performance with K-Mag
Potassium, magnesium and sulfur are continually removed from the soil by high-yielding crops and, in the case of S and Mg, often are not replaced by many of today’s high analysis fertilizers.
Severe to moderate deficiencies of K, Mg and S are present in nearly every major crop-producing area. Heavy cropping practices, erosion and leaching all contribute to shortages.
K-Mag provides three essential nutrients in the proper balance, helping to ensure that nutrition is not a limiting factor in achieving top performance.









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mrjansen – :
Ah K-Mag – where have you been all this time? Never heard of this kind of mix before, and I find it very useful as a preventative measure against deficiencies that *might* occur. I’ve only used it at the strength mentioned in the mixing instructions. I’ve applied it on both mature and (very) young plants. The clones are sprayed at 2 weeks and the flowering plants are sprayed within the first two weeks of induction, while their metabolism is changing. These applications help prevent mag / sulfur deficiency, and I swear the clones look better even 24 hours after application. My only gripe – I wish calcium was thrown in this product, but I use their limestone powder as a top dressing instead.
hydrorod (verified owner) – :
Great Stuff, really helps give that extra boost to my flowers Very impessive blend used either as a drench or spray for high performance maintenance during all growth stages but mainly during 3-5 week works for me.