Natural Sulfate of Potash (K2SO4) is a natural potash mineral that contains 51 percent soluble potash and 18 percent sulfur. It also contains trace amounts of calcium and magnesium. Potassium is second only to nitrogen in terms of the abundance needed for plants. Many crops use as much as 250# of potash per acre per year.
Soluble Sulfate of Potash is also available.
Sulfate of Potash can be applied as a supplement or blended with other natural materials that address your soil deficiencies. Application rates should be based on accurate soil test results. If you also need magnesium, see Sulfate of Potash, Magnesia. Sulfate of potash is mined and sun dried in the Great Salt Lake Desert in Utah.
OMRI LISTED™ – View OMRI Certificate
Natural Sulfate of Potash – View MSDS (pdf)
For more information, download the product label pdf.