Encourage lush flowers on plants that thrive in a low pH soil， helping grow beautiful Azaleas， Camellias， Rhododendrons and other acid-loving plants. Contains 5-percent sulfur and is blended from natural and organic farm-grade ingredients that are beneficial for both plants and soil. Contains 5-percent sulfur to help lower soil pH and improve availability of micronutrients for shrubs and trees Apply twice per year in spring and fall Formulation 5-4-3 No sludge， fillers or additives Blended from natural and organic farm-grade ingredients Plastic Made in USA Your security is our number one concern