When applied to the soil, sulfur acts as a soil amendment to lower pH levels, making the soil more acidic. This is especially beneficial for plants that thrive in acidic conditions, such as azaleas, blueberries, and rhododendrons. Soil sulfur is typically used to correct soil pH imbalances, as overly alkaline soil can limit the availability of essential nutrients to plants. By adjusting the soil’s pH, sulfur helps make these nutrients more accessible to plants, promoting healthier growth and preventing nutrient deficiencies.