💧 Fast-Acting, Water-Soluble Fertilizer: Instantly dissolves in water for quick nutrient absorption. Perfect as a liquid plant fertilizer for both indoor and outdoor use. 20-20-20 Water-Soluble Fertilizer – Powder for Liquid Plant Food for Indoor & Outdoor Plants, Orchids, Vegetables, Lawns, Flowers – 20 20 20 Fertilizer 2 Quarts 4 lbs.