Happy Frog Jump Start Fertilizer from FoxFarm is made for organic gardening! Use it when transplanting seedlings or repotting established plants. Simply mix this dry fertilizer in with the potting mix before watering. Jump Start Fertilizer contains phosphorus, an important nutrient in the early stages of plant growth, and calcium to help build stronger cell walls and improve the plant’s ability to fight disease. Mycorrhizal fungi boost to plant root systems for a healthier plant. OMRI Listed and Registered CDFA Organic Input Material. 4 lb. bag.