Hi-Yield Magnesium Sulfate

5 out of 5 stars 2 Reviews | 1 Q&A

Hi-Yield Magnesium Sulfate

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Average Rating

5 out of 5 stars Rating: 5

2 Reviews | 1 Q&A

Product Overview

Hi-Yield Magnesium Sulfate is a water soluble source of Magnesium that prevents and controls yellowing of plant foliage due to a deficiency of Magnesium known as  Chlorosis. In addition to correcting Magnesium deficiencies Hi-Yield Magnesium Sulfate will also help turn Hydrangea blooms white. Apply Hi-Yield Magnesium Sulfate as either a soil treatment or a foliar spray. Great for use on palms.

Features and Specs

Active Ingredient Magnesium (Mg) 9.5% (9.5% Water Soluble Magnesium (Mg)) Sulfur (S) 12.5% (12.5% Combined Sulfur (S))
Target pests Chlorosis
For use in Magnesium deficient plants, hydrangeas, palms
Application Foliage spray: 2 tablespoons per gallon
Soil application: 1 lb. per 100 sq. ft.
Pet safe Yes, if used as directed on Label
Shipping Weight 4.11 lbs
Manufacturer VPG (Mfg. Number: 21634)
UPC 732221216341


The product is not intended for nor recommended for Container Grown Plants.

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  • 5 of 5 Stars

    Good for palms

    By Mary on 04/22/2017

    Excellent product. Good for palms and other landscape bushes needing greening up.

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    2 of 3 people found this review helpful

  • 5 of 5 Stars

    Eureka Palms

    By Diane on 05/29/2020

    Put fertilizer on my palms , so far so good . I'll know more in a month or so

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    1 of 1 people found this review helpful

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Questions & Answers

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Is Hi-Yield Magnesium Sulfate suitable for a bath for a human?

Hi-Yield Magnesium Sulfate is not for use on humans. This product is for use on Magnesium deficient plants, hydrangeas, and palms. 

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0 of 2 people found this answer helpful

Hi-Yield Magnesium Sulfate 5 out of 5 stars Rating: 5 (2 Reviews / 1 Q&A)

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