Woodace 12-3-6 A.C.R.E Acidifying Plant Fertilizer is a high-performance premium fertilizer formulated to lower soil pH for plants that prefer more acidic soils such as azaleas, rhododendrons, conifers, and evergreens. This product is designed for top-dress application to ornamentals growing in planting beds and other non-turf areas, and is ideal for maintaining foundation plantings, shrubs, ground covers and trees that prefer a slightly acidic soil environment. This product features increased Sulfur content to lower soil pH, 59% slow-release nitrogen from MESA technology and biosolids which add organic matter to soil, as well as Fe (Iron) and Mn (Manganese) to address micronutrient deficiencies limited by high soil pH.