Magnesium Sulfate Fertilizer | Epsom Salts
Dry Magnesium Fertilizer for Palms, Citrus, Trees, Shrubs, Roses, Vegetables, Annuals, and Turf
Southern Ag Magnesium Sulfate Fertilizer is a dry, fertilizer-grade magnesium source designed to help correct magnesium deficiency in a wide range of outdoor plants. Magnesium is an essential secondary plant nutrient that supports healthy green color, strong plant growth, and normal chlorophyll production.
Magnesium deficiency commonly appears as yellowing between the veins of older leaves while newer growth may remain green. On palms, symptoms often begin as yellowing along older fronds or leaflets, while the center portion of the palm blade stays green. If left uncorrected, older leaf tips may turn brown and remain damaged.
This easy-to-apply dry fertilizer helps supply water-soluble magnesium directly to the soil. Simply spread the recommended amount over the treatment area and water in thoroughly. No tank mixing or spraying is required.
Key Benefits
| Feature |
Benefit |
| Corrects Magnesium Deficiency |
Helps restore deep green plant color caused by magnesium shortage |
| Dry Fertilizer Application |
No mixing, spraying, or tank equipment required |
| Ideal for Palms |
Helps reduce yellowing on older palm fronds caused by magnesium deficiency |
| Broad Plant Use |
Suitable for citrus, palms, trees, shrubs, roses, vegetables, annuals, and turf |
| Soil-Applied Formula |
Spread evenly over soil and water in for best results |
| Fertilizer-Grade Magnesium Sulfate |
Supplies water-soluble magnesium for plant uptake |
Product Overview
| Product Name |
Southern Ag Magnesium Sulfate Fertilizer |
| Product Type |
Dry fertilizer |
| Primary Nutrient |
Magnesium |
| Guaranteed Analysis |
Magnesium 15.0% |
| Magnesium Source |
Magnesium sulfate |
| Application Method |
Dry soil application only |
| Spray Application |
Not for spray application |
| Best Soil pH Range |
Most plants perform best around 6.0–6.5 pH |
| Common Use Sites |
Palms, citrus, trees, shrubs, roses, vegetables, annuals, lawns, and turf |
Where to Use
Southern Ag Magnesium Sulfate Fertilizer may be used on:
| Plant Type |
Use Purpose |
| Palms |
Helps correct magnesium-related yellowing on older fronds |
| Citrus Trees |
Supports healthy green foliage and nutrient balance |
| Trees & Shrubs |
Helps correct yellowing caused by magnesium deficiency |
| Roses |
Can be applied during regular fertilization |
| Vegetables |
Supplies magnesium for healthier plant growth |
| Annuals |
Helps maintain strong color and vigor |
| Lawns & Turf |
Helps improve turf color where magnesium is deficient |
Application Rates
After applying, water in thoroughly to move the fertilizer into the soil and help prevent dry granules from remaining on foliage.
| Application Area |
Recommended Rate |
| Palms |
1/2 to 5 lbs. per palm, depending on size |
| Palms by Height |
Use 1 lb. per 5 feet of tree height, up to 5 lbs. per tree |
| Large Shrubs & Trees |
1/2 to 1 lb. per 5 feet of canopy width |
| Roses |
1 to 2 tablespoons per bush each time you fertilize |
| Lawns or Large Areas |
1/2 to 1 lb. per 100 sq. ft. |
| Vegetables |
1/4 to 1 lb. per 100 sq. ft. |
How to Apply
- Measure the treatment area or plant size to determine the correct amount.
- Spread the dry fertilizer evenly over the soil surface.
- Keep granules off tender foliage when possible.
- Water in thoroughly after application.
- Repeat only as needed and according to label directions.
Important Use Notes
| Use Guideline |
Details |
| Water In After Application |
Helps move nutrients into the soil and reduces risk of plant injury |
| Do Not Spray |
This product is fertilizer grade and not intended for spray applications |
| Avoid Tender Plant Parts |
Dry material may injure delicate foliage or tender growth |
| Old Damaged Leaves |
Previously damaged leaves may not fully recover, but new growth can improve |
| Soil pH Matters |
Magnesium availability can be affected by soil pH; many plants grow best around 6.0–6.5 |
