Jobe's Tree & Shrub Fertilizer Spikes 15-3-3Its no secret that beautiful, healthy trees make your yard look spectacular. Jobes Fertilizer Spikes for Trees & Shrubs ensure a continuous supply of nutrients below the surface, where the trees active roots are growing. Jobes Spikes are easy to insert around each trees dripline, and the slow release formula lasts all season. No wasteful runoff, no mess, hazards or smells only a safe beautiful yard. For best results, use Jobes Fertilizer Spikes for