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The reason you want to add really potash to your lawn is really to be able to give it nutrients so that you can actually get a lush and plush lawn. You can tell a lot of times when your lawn does not have enough potassium is basically it’s turning brown and turning a little purplish, or the leaves are not doing as well. And a lot of times it’s a it really appears when it’s drought so a lot of times is again you just go ahead and buy fertilizer generally a triple 10 or triple 30 basically it’s about 10 pounds per thousand square feet.
Till the soil in the potassium-deficient lawn to a depth of 1 foot.
Add 1-3 lbs. Potassium to the soil per 1000 square feet, depending on the severity of the potassium deficiency. The North Carolina State University Extension Service says that to add to 1-3 lbs. Potassium to a 1000 square feet, you need to use 1.7 to 5 lbs. Potassium chloride, 2.3 to 6.8 lbs. Potassium nitrate or 2.1 to 6.3 lbs. Potassium sulfate.
Use alternatives, organic options such as greensand, kelp or granite meal if desired. Adjust the amounts depending on the size of the area being amended.
Till the amendments to the soil thoroughly.
Wait three or four months, then perform a soil test on the area. Examine the results to determine whether the amendment was enough to correct the potassium deficiency or if further steps need to be taken.
Apply a potassium-rich fertilizer to the soil if the test shows the mineral is still below the desired level. Look for a fertilizer with a high (K) rating, which is the symbol for potassium. Follow the directions on the labeling when applying the fertilizer.
Test the soil again before adding more potassium to the soil. Avoid overloading the soil with potassium, which can stunt root growth and deplete magnesium levels.
