Jobe&rsquo;s Fertilizer Spikes for Bulbs and Perennials 9-12-6 Time Release Fertilizer for Tulips, Daffodils and all Other Bulb Perennials, 18 Spikes Per Package Pre-measured fertilizer spikes nourishes at the roots; Time release fertilizer bulbs and other perennials 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 feeds for 2 months; Continuous nourishment for tulips, daffodils, lilies and all other perennials Apply every 8 weeks; Guaranteed fertilizer analysis: (9-12-6) 18 spikes in waterproof, resealable pouch