Check the listing for details. Boca Hydro Organic Sulfate of Potash Water Soluable Nutrient Fertilizer 0-0-50. Condition: New. Listed at 24.99 USD. Features Potassium helps plants achieve bigger blooms, stronger flowers, bigger yields and more evenly ripened fruits and buds. In addition to healthier stronger roots, stems, and tubers, it also increases plant vigor making them less susceptible to disease and adverse conditions such as excessive heat or cold. Potassium also improves crop color, texture, taste and size of fruit. High-purity, finely ground water-soluble organic potassium designed to be applied directly to plants via foliar (spraying) drip or fertigation. OMRI Listed Sulfate of potash is an organic natural source of potassium with near zero salt content. Will not impact soil ph. Use on all flowering plants trees and shrubs and lawns. Easy to apply at every watering or fertilizing cycle or throughout the growing season, Easy to apply with other nutrients. Approved for all fertigation and irrigation injection systems. Water-Soluable Product Do not apply directly to soil Easy dosing Foliar: Seedlings: 1 Teaspoon per gallon Small plants and shrubs: 1 Tablespoon per gallon Trees: 1-3 Tablespoons per gallon Pots and containers: Small Plants 1 tablespoons per gallon. Larger plants and small trees 2 tablespoons per gallon. Hydroponics: Not for Recirculating Systems (Drain to Waste) Soilless, Coco, Rockwool 1 tablespoon per gallon for small plants, 2 tablespoons for large plants. Drench: Small trees and bigger shrubs 1/2 cup per 5 gallons of water Large trees 1 Cup per 5 gallons of water Fertigation: Measure ppm of irrigation water, Mix 1-2 tablespoon per gallon evenly with water, measure ppm then adjust injection rate accordingly. Amounts can be increased depending on plant tolerance. Guaranteed Analysis CAS No 7778-80-5 Soluable Potash (Organic) .........50%Sulfur (Organic) ..........................17%