Carl Pool Pecan Special is a balanced blend of micro-nutrients designed to help your Texas Pecan Trees thrive and produce full, healthy, Pecans. All the ingredients included in this formulation are safe compounds designed to fulfill your tree's needs of the major micro-nutrients Nitrogen, Phosphorous, Potassium, Sulfur and Zinc. The addition of extra Zinc is particularly important as it helps Pecan Trees avoid Rosetta disease and insufficiency of this crucial nutrient.