Open Sesame is a blend of nutrients specifically designed for use during the early weeks of flowering. Open Sesame supports vigorous flowering and bud development. Use in soilless mixes, soils, hydroponics and aeroponic systems. Open Sesame is a high-phosphorus soluble fertilizer that's designed for use during the early weeks of flowering to support vigorous blooming and bud development. Whether you're growing in hydroponic systems, containers or gardening in the soil, Open Sesame will go right to work at the root zone and deliver targeted nutrients when the plants need them the most.