TurfGro 8-2-12 Palm & Tropical Blend Professional Fertilizer with Kieserite is a specialty fertilizer formulated with a complete minors package to meet the needs of palms and other tropical plants. It contains Kieserite, a controlled-release magnesium source, which is university recommended to treat magnesium deficiencies common in palms. Nitrogen, phosphorus and potassium sources are polymer-coated, ensuring sustained feeding and low burn potential.