CalMag 15-5-15
     CalMag 15-5-15 urea free This formula is acid forming and recommended for plants in calcareous soil or use where alkaline water pH is high. It helps form an acid soil condition while supplying soluble available calcium, magnesium, sulfur and six micronutrients. If you are experiencing problems with your plants due to calcium and/or magnesium deficiencies use of this cal-mag fertilizer can help. We use it on our slipper orchids.