-Gro Watering Can Singles Water Soluble Plant Food, 24 Pack is an all-purpose water soluble plant food designed to provide essential nutrients that start working instantly to promote fast and beautiful growth. These convenient, pre-measured packets a quick and no-mess way to feed your plants, making plant care simple and efficient. I for both outdoor and container plants, use one packet per gallon of water every two weeks. For indoor plants, dilute one packet in two gallons of water. The waterproof packaging ensures durability and is for outdoor merchandising, helping you keep your plants healthy and thriving with ease.