It's easy to love the large, spectacular flowers of Hydrangeas. And now it's easy to control their color, too. Color Me Blue™ allows you to turn your flowers blue by adding the natural minerals required for producing those lovely blue blossoms. Simply add the pelletized soil sulphur to your soil and you'll enjoy blue blooms, even in alkaline soils.
For established Hydrangeas, apply 4 tablespoons evenly around the root zone of the plant and water well. For new plants, mix in 2 tablespoons with the soil as you plant. 2.75lb container.