FoxFarm Happy Frog® Potting Soil (Copy)Cultivation Nation Grow Fertilizer is part one in our 3 part liquid feeding program. Start with Cultivation Nation Grow for vegetative growth, then supplement with Cultivation Nation Micro and finish strong with Cultivation Nation Bloom. How To Use: For seedlings use 1 2 tsp (2. 5 mL) per gallon (4 L) of water once per week. For established plants use 3 tsp (15 mL) per gallon (4 L) of water once per week during the vegetative cycle.