These past few days I have been working on getting blueberries into the ground. First I had to get blueberries, as they are very difficult to grow from seed. Then, knowing that the pH of all the planters is 8, I had to bring it down to a 4.5. Organic material and Sulfur do work well, but they take a long time. However, there is a certain chemical, which, while easily able to damage plants if not used carefully, is very effective. This chemical is Aluminum Sulfate.