Magriculture Magnesium Sulfate (Epsom Salt) - 50 lb Bag

Soluble Magnesium and Sulfur for Fertigation and Hydroponic Feeding - 50 lb Bag

Plants that lack magnesium or sulfur show it in weak, pale growth, and many nutrient programs leave a gap in these secondary nutrients. This agricultural-grade magnesium sulfate heptahydrate, commonly called Epsom salt, supplies both in a form that dissolves into clear solutions. Magnesium sits at the center of the chlorophyll molecule, so a steady supply supports photosynthesis.

The 50 lb bag suits growers who feed on a regular schedule: greenhouse and nursery operations, commercial growers and larger indoor gardens. Hobbyists with a small system will find it a long-term supply.

Key Features & Benefits

• Magnesium and sulfur in one input — covers two secondary nutrients with a single product.
• Highly water soluble — dissolves into clear solutions for liquid-feed programs.
• Works across application methods — suits center pivot, micro-jet, drip-trickle, hydroponic and foliar spray use.
• OMRI-approved for organic growing — follow the applicable restrictions and your certifier's requirements.
• 50 lb professional bag — sized for repeat use across larger areas.

Who Should Use Magriculture Magnesium Sulfate

Use it if you run fertigation or hydroponic systems and need to add magnesium and sulfur. It also fits growers working in sandy soils, low-CEC soils, or crops with high magnesium demand. Apply it where you have a documented or confirmed deficiency.

About Magriculture Magnesium Sulfate

This product is agricultural-grade magnesium sulfate heptahydrate (MgSO₄·7H₂O), also sold as Epsom salt fertilizer. The listed minimum analysis is 9.8% magnesium and 12.9% sulfur. It is sold as one 50 lb bag.

Frequently Asked Questions

Q: What does this product supply?
A: It supplies magnesium and sulfur. Magnesium supports chlorophyll formation and photosynthesis, and sulfur supports plant metabolism, enzymes and protein formation.

Q: Can I use it in hydroponic systems?
A: Yes. It is highly water soluble and suits hydroponic, drip, micro-jet, center pivot and foliar spray programs. Dissolve it fully before use.

Q: Does it mix with other nutrients?
A: It is compatible with most other soluble nutrients. Avoid mixing it into concentrated calcium or phosphorus solutions.

Q: Is it suitable for organic growing?
A: It is OMRI-approved for organic growing. Follow the use restrictions and your certification requirements.

Q: What is magnesium sulfate heptahydrate?
A: It is the crystalline form of magnesium sulfate with seven water molecules, written MgSO₄·7H₂O. It is the classic Epsom salt form used as a fertilizer.

Q: When should I apply it?
A: Apply it when you have a confirmed need for magnesium or sulfur, such as a documented deficiency. Sandy and low-CEC soils are common cases.