Espoma Organic Garden Lime 6 lb., is formulated to keep your hydrangeas pink! It adjusts the pH of excessively acidic soils. it is pelletized for easy application. Espoma Organic Garden Lime is the finest grade of pelletized, dolomitic limestone available. Raises soil pH so that plants get the most from nutrients present. Spreads easily, reacts quickly and does not pose the hazards associated with hydrated lime. This garden lime will turn your hydrangeas pink!