Sulfate of Potash

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Sulfate of Potash is a highly concentrated source of slow release potassium.


Sulphate of Potash has a very high potassium content, making it ideal for encouraging strong flower and fruit development. It also helps to ripen and strengthen plants ensuring they can defend against pest, disease and weather damage. \

Because of its high concentration of potassium, Sulfate of Potash helps plants utilize nitrogen more efficiently while, at the same time, balancing the effect of excess nitrogen and calcium.  The use of Sulfate of Potash may also reduce boron requirements.

  • Sulfate of Potash can decrease water requirement of plant
  • The potassium Sulfate of Potash provides is essential for cell division and growth
  • Typical NPK 0-0-48*


If you are looking to order larger quantities, come visit us at our store in Magnolia (Seattle) or contact us at

*We do our best to provide you with useful, accurate information. That being said, we can make no guarantees. Much of what we have posted we believe to be common knowledge in the agricultural and horticultural worlds. In addition, we want to give credit where credit is due. Our resources page lists resources we commonly use and encourage you to use too.

Additional information

Weight .3 lbs

2 lbs, 4 lbs, 10 lbs, 20 lbs


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logo-at-walts-organic WALT'S ORGANIC FERTILIZER


2209 West Elmore Street
Seattle, WA 98199




Phone: (206) 297-9092

Fax: (206) 297-9093

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