Jobe's 01661 Evergreen Spikes 13-3-4 Time Release Fertilizer for, 15 Pre-measured evergreen fertilizer spikes nourishes at the roots; Time release fertilizer for Junipers, Spruces and other evergreen trees 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 tree's active roots are growing Jobes fertilizer spikes are easy to insert around each trees drip-line; Slow release formula lasts all season Fertilizer analysis: (13-3-4) 5 spikes, (11-3-4) 9 spikes, (13-3-4) 15 spikes, (13-3-4) 160 spikes