MAGNESIUM SULFATE• No mixing/ No spraying - use as a dry fertilizer • Corrects Magnesium deficiency in shrubs & trees• Acidify soils with less risk of staining CONTAINS: Fertilizer grade Magnesium Sulfate, Magnesium as Metallic 16.0%. Not for spray application. USE ON: Citrus, palms, trees, shrubs, annuals and turf.CONTROLS: Magnesium deficiency - yellowing between the veins of older leaves in plants. On palms, (especially date palms) this deficiency appears as yellowing of older leaflets while the center of the palm blade remains green. Eventually the tips of the older leaves will brown. RATE: 1 - 2 lbs. per 100 sq. ft. or + - 1 lb. per 5 ft. of tree spread. APPLICATION: Spread over treatment area and water-in.