what to add to sandy soil for a garden
For best results, apply wood ash in the winter, and apply no more than 2 pounds per 100 square feet, every two to three years. To raise the pH of your soil by about one point: In sandy soil: add 3 to 4 pounds of ground limestone per 100 square feet. In loam (good garden soil): add 7 to 8 pounds per 100 square feet. In heavy clay: add 8 to 10 pounds per 100 square feet. Alkaline Soil. If your soil is higher than 6.8, you will need to acidify your soil. Soils in the western U.S., especially in arid regions, are typically alkaline. Soil is usually acidified by adding ground sulfur.