Acidic Soil Amendment
Acidic soil amendment
Ways to Make Soil More Acidic Add Sulfur. Sulfur will take some time to lower the soil pH, so it should be added the year before you want to plant. Add Iron Sulfate. ... Add Sphagnum Peat Moss. ... Use Acidic Fertilizer. ... Add Aluminum Sulfate. ... Add Ammonium Sulfate.