Jobe&rsquo;s Tree & Shrub Fertilizer Spikes 15-3-3 Time Release Fertilizer for Trees & Shrubs, 5 Spikes per Clear Bag Pre-measured fertilizer spikes nourishes at the roots; Time release fertilizer for all trees and shrubs Easy to use fertilizer spikes; No wasteful runoff, no mess, hazards or smells; Apply early spring and late fall Continuous supply of nutrients below the surface, where the active roots are growing Jobes tree spikes are easy to insert around each trees dripline, and the slow-release formula feeds all season No wasteful runoff, no mess, hazards or smells. Jobes tree and shrub spikes bag 15-3-3 Featuring a ready-to-sell, full color display and header Includes with 5 pack or loose with easy to follow directions on package Easy to insert around the trees dripline, and the slow-release formula lasts all season Heavy-duty 5in enclosed metal gears like commercial spreaders