Keep your home plants healthy and fertilized with Jobe's Organic Root Feeder Spikes. Containing pre-measured, slow-release nutrients that are conveniently inserted into the soil, the 2.2 oz spikes provide essential nutrients where your plants need it most without mess, hazards, smells or wash-through. Perfect for flowering plants, they make fertilization fuss-free. Fertilizer Analysis (N-P-K): 10-10-4 The spikes break down slowly, so you won't need to worry about re-fertilizing often. Keep your plants healthy and thriving all season long.