Its 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 the trees dripline, and the slow-release formula lasts all season. No wasteful runoff, no mess, hazards or smells only a safe beautiful yard. Spikes are specially formulated for all deciduous trees and shrubs. For best results, use Jobes Fertilizer Spikes for Trees & Shrubs in early spring and late fall.