Earth Science Fast Acting Sulfur granules start working immediately to lower the pH of your soil. Help your hydrangeas, azaleas, and blueberries absorb more food and improve fertilizer effectiveness. If your soil pH is too high, your acid-loving plants might need a boost of sulfur. Earth Science Fast Acting Sulfur incorporates elemental sulfur to naturally lower soil pH to help plants absorb more food. Earth Science Fast Acting Sulfur will help green up your lawn and create colorful blooms! This fertilizer enhancer is great for hydrangeas, azaleas, blueberries, and other acid-loving plants. Earth Science Fast Acting Sulfur is safe to use on any grass type, and safe for people and pets. Your human and furry friends can use the lawn immediately after application. Earth Science patented Nutri-Bond Technology bonds with the soil to help keep more product where you put it. Nutri-Bond is better for the environment and helps your lawn and garden get the most out of every application.