Jobe&rsquo;s Palm Tree Fertilizer Spikes 10-5-10 Time Release Fertilizer for All Outdoor Palm Trees, 5 Spikes Per Package Pre-measured palm tree fertilizer spikes nourishes at the roots; Apply twice per year between March and October Easy to use fertilizer spikes; No wasteful runoff, no mess, hazards or smells Continuous supply of nutrients below the surface, where the active roots are growing Jobes spikes are easy to insert around each trees dripline, and the slow-release formula feeds all season Guaranteed fertilizer analysis: (10-5-10) 5 spikes per package