Miracle-Gro Tree & Shrub Fertilizer Spikes Go to amazon.com Related posts Top 10 spruce tree fertilizer FeatureSold on Amazon Description12-6-12. Perfect for all evergreen varieties, including pines, spruces, dogwoods, hemlocks, junipers, arborvitae, etc. No. 1003861: Formulation: 12-6-12, Count: 12, Feeding Period: One season