Down to Earth All Natural Acid Mix Fertilizer 4-3-6, 5 lb. Down to Earth All Natural Acid Mix Fertilizer 4-3-6, 1 lb. A fertilizer blended specifically for acid soil loving plants such as rhododendrons, azaleas, hydrangeas, evergreens, blueberries, raspberries, and other plants that thrive in a low pH soil.
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