Jobe's Organics Annueal Fertilizer Spikes, 3-5-6, give gardeners a fuss-free, eco friendly option for healthy and beautiful plants. These carefully formulated organic-based fertilizer spikes help build a nourishing environment that promotes beneficial microbial action where plants need it most - at the roots. This "in-the-ground" feeding is the most efficient delivery system for organics. The premeasured spikes make for a fast, easy and mess free fertilizing experience. Jobe's Organics are available in four varieties, giving your plants the specific formula they need.