Jobe’s 16-4-4 Tree & Shrub Fertilizer Spikes (5-Pack)

Fertilizer spikes specially formulated for all deciduous trees and shrubs. Insert around the tree’s drip line, and let the rain do the rest. Apply in early spring and late fall for best results. Easy to use, no wasteful runoff, no mess, and odor free. Slow release formula. A single application can feed for up to 90 days.