Premium Horticultural-Grade Magnesium Sulfate for Professional Growers

Haifa BitterMag™ delivers ultra-pure magnesium sulfate heptahydrate (MgSO₄·7H₂O) engineered specifically for commercial horticulture and precision agriculture. With 100% water solubility and pharmaceutical-grade purity, BitterMag provides immediately available magnesium (9.8% Mg) and sulfur (13% S) to support chlorophyll production, enzyme activation, and optimal nutrient uptake across all growth stages.

Key Benefits

• Instant Solubility, Zero Residue: Dissolves completely in cold water without sediment, perfect for injection systems, drip lines, and spray applications
• Dual Nutrient Delivery: Supplies both magnesium and sulfur in plant-available sulfate form for rapid uptake and utilization
• Universal Compatibility: Tank-mixes cleanly with most fertilizers and crop protection products; ideal for custom blend formulation
• Multi-Application Versatility: Apply through fertigation, foliar spray, soil incorporation, or hydroponic nutrient solutions
• Chlorosis Correction: Rapidly reverses magnesium deficiency symptoms including interveinal yellowing and leaf curl
• Horticultural Purity: Low heavy metal content and minimal impurities ensure safe use on high-value crops and organic production systems

Technical Specifications

• 9.8% Magnesium (Mg)
• 13% Sulfur (S)
• Chemical formula: MgSO₄·7H₂O
• 100% water soluble crystalline powder
• Horticultural grade purity
• 50 lb. bag

Application Guidelines

Fertigation/Drip Irrigation: Apply 5-20 lbs per acre per week depending on crop demand and tissue analysis results. Dissolve completely before injection. Compatible with most fertilizer programs.

Foliar Application: Mix 2-5 lbs per 100 gallons of water. Spray to wet foliage during cooler parts of the day. Add a non-ionic surfactant for improved coverage. Repeat every 7-10 days as needed.

Hydroponics: Maintain 50-75 ppm Mg in nutrient solution for most crops. Adjust based on crop type, growth stage, and water quality. Monitor EC and pH after addition.

Soil Incorporation: Broadcast 20-50 lbs per acre and incorporate before planting, or side-dress during the growing season. Soil application provides season-long magnesium and sulfur availability.

Why Magnesium and Sulfur Matter

Magnesium is the central atom in every chlorophyll molecule, making it essential for photosynthesis and energy production. It also activates enzymes involved in carbohydrate metabolism and protein synthesis. Sulfur is a building block of amino acids, proteins, and vitamins, and plays a critical role in nitrogen utilization and oil/protein content in seeds.

Deficiencies of either nutrient limit yield potential and crop quality. BitterMag addresses both needs simultaneously, making it an efficient and economical choice for maintaining optimal plant nutrition.

Ideal For

Greenhouse vegetables, field crops, tree fruits and nuts, berries, vines, ornamentals, turf, cannabis, and hydroponic production systems. Particularly valuable in high-pH soils, sandy soils, and intensive cropping systems where magnesium and sulfur are frequently limiting.

Trusted by commercial growers worldwide, Haifa BitterMag delivers the purity, solubility, and performance you need to maximize crop quality and profitability.