• Magriculture Magnesium Sulfate 50 lb. bag.
  • Magriculture Magnesium Sulfate 50 lb. bag back view.
  • Magriculture magnesium sulfate fertilizer full pallet of 50 lb bags (epsom salt)
  • A pile of Magriculture magnesium sulfate heptahydrate rhombic crystals.
  • Description
  • Product Features
  • Specifications

Magriculture Magnesium Sulfate Heptahydrate – 50 lb

Giles Chemical's Magriculture is a premium agricultural-grade magnesium sulfate (MgSO4·7H2O) — a highly soluble, bioavailable source of magnesium and sulfur for professional growers. OMRI listed for certified organic production.

Analysis

  • Magnesium (Mg): 9.5%
  • Sulfur (S): 12.5%
  • 1 gram per gallon yields 25 ppm Mg and 33 ppm S

Key Features

  • OMRI listed — approved for certified organic growing
  • Extremely high water solubility for true clear solutions
  • Compatible with most soluble nutrient programs (except concentrated calcium or phosphorus solutions)
  • Magnesium is the central element in the chlorophyll molecule — critical for photosynthesis and energy conversion
  • Especially important in sandy soils, low-CEC soils, and high-K or high-ammonium-N programs

Ideal Application Methods

  • Hydroponic nutrient solutions
  • Fertigation: center pivot, drip/trickle, micro-jet
  • Foliar spray programs
  • Soil amendment for Mg-deficient fields

Packaging

  • 50 lb bag
  • Water Soluble: Highly soluble in water. Ideal source for all Fertigation Systems: center pivot, micro-jet, drip-trickle, hydroponic and foliar spray applications.
  • High Analysis: With 9.5% magnesium and 12.5% sulfate.
  • OMRI Listed: Allowed with restrictions as a crop fertilizer. For use with a documented magnesium deficiency in soil. NOP reference: 205.601(j)(5)
Guaranteed Analysis 
Magnesium (Mg) 9.8% (min.) 
9.8% water soluble magnesium 
Sulfur (S) 12.9% (min.)

Variable Solubility Data table*
Saturated Solution with 70°F water = 5.5% Mg
Saturated Solution with 60°F water = 4.7% Mg
%Mg
Solution**
1 Gallon Water
(70°F)
Amount
Magnesium Sulfate Hepta.
5% Mg 1 Gallon (8.33 lbs) 8.5 lbs
4% Mg 1 Gallon (8.33 lbs) 5.7 lbs
3% Mg 1 Gallon (8.33 lbs) 3.6 lbs
2% Mg 1 Gallon (8.33 lbs) 2.1 lbs
 * These mixing amounts based on mixing of water and magnesium sulfate hepta.
only; additional inputs in solution will lessen the amount of mag-sulfate that can be
added to make a saturated solution and lessen its Mg concentration.
** At any solution concentration of Mg there is 1.3 times as much Sulfur (S)
in solution

Magriculture Magnesium Sulfate Heptahydrate 50 lb

Magriculture Magnesium Sulfate Heptahydrate 50 lb

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$0.53 lb
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What Makes Us Different

At the leading edge of the market, Custom Hydro stands out by providing the growing industry with fertilizers that are not only of premium quality but also feature innovative
solutions tailored for the unique needs of hydroponic and organic farming practices.

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    Never Compromise on the Quality of Inputs.

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