The Dr. Earth Acid Lovers Fertilizer (4 lbs) is Organic and natural, specifically designed for plants like azaleas, camellias, rhododendrons, maples, hollies, gardenias, hydrangeas, blueberries, evergreens, ferns, and shade plants. Promotes healthy soil, enhances nutrient availability, and increases plant performance. It also helps maintain soil pH at 5.5, which is ideal for acid-loving plant. Contains a balanced mix of nutrients with a 3-4-3 NPK ratio, plus additional calcium, sulfur, magnesium, iron, and manganese. This fertilizer is designed to support robust growth and vibrant blooms in your acid-loving plants.