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Hi-Yield Magnesium Sulphate
Hi-Yield Magnesium Sulphate
  • $15.97
  • $10.97
  • -$5.00 (32% Off!)
Availability and Options Temporarily Out Of Stock

This product is temporarily out of stock. Restocks typically occur at the beginning of each week. Check back soon and sorry for the inconvenience!

Shipping Information
Additional Information About Hi-Yield Magnesium Sulphate


Available in the following sizes:

  • 4 pound bag

Hi-Yield Magnesium Sulfate  is an effective, soluble source of Magnesium that helps prevent and control Chlorosis (yellowing of foliage) due to Magnesium deficiency. It will also help encourage white blooms on Hydrangeas.

Application Rates:

  • Foliage Spray: Mix 2 tablespoons per 1 gallon of water. Apply with a sprinkling can, sprayer or hose feeder. Soak entire plant thoroughly. 

  • Soil Application: Apply at the rate of 1 pound per 100 square feet and water in thoroughly.

  • Bloom Feeding for Hydrangea: Apply at rate of 1 pound per 100 square feet and water in thoroughly.

Helpful Tips

  • Can be applied as a foliage spray or as a soil treatment.



Other elements:


For use on:

Hydrangeas to encourage white blooms and on all other plants to control Chlorosis (Yellowing of foliage due to Magnesium deficiencies.

Pet safe:

Yes, when used as directed

Manufactured by:



MSDS (Material Safety Data Sheet)


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