It's no secret that beautiful, healthy trees make your Yard look spectacular. JOBE's fertilizer spikes for trees and shrubs ensure a continuous supply of nutrients below the surface, where the trees active roots are growing. JOBE's spikes are easy-to insert around each tree's dripline and the slow release formula lasts all season. No wasteful run-off, no mess, hazards or smells only a safe beautiful yard. For finest results, use JOBE's fertilizer spikes for trees and shrubs in early spring and late fall.