I just received my soil sample analysis and it indicates that sulfur is recommended to acidify the soil. The pH is 7.2. The P and K are in the medium low range, but my question is this. Is there a "bagged" product that I can apply that will satisfy all requirements. Also, any suggestions to balance the soil would be helpful. The yard is "struggling" because of shade, and it was seeded with shady mix 5 years ago. Thanks.