What should be done to acidify the soil before planting?
That will depend on the soil type. If you are lucky enough to be starting with a well-drained soil, it can be acidified by adding large amounts specific organic materials that acidify as they break down, such as peat moss and composted oak leaves. What if the soil isn’t well-drained? If the soil has lots of clay and is poorly drained, adding lots of organic material can make the problem worse by holding more moisture. In that situation, it is better to acidify the soil using elemental sulfur or iron sulfate. Apply the recommended amount of sulfur or iron and incorporate it into the top several inches of soil. What is the best way to safely acidify soil where I already have plants? Applying elemental sulfur is the best way. Sulfur is very slow acting (it may take as long as 3-4 months to be effective). Applied at recommended rates, it’s safe for your plants. Iron sulfate it good, too. Iron sulfate acts more quickly (it takes about 2-3 weeks to affect the pH) but it takes a lot more of t
