Miracle-Gro Tree & Shrub Spikes, 15-5-10 and 16% S, Pack of 12

Pack of 12 These 15-5-10 spikes also contain 16% combined Sulfur to promote lush, beautiful foliage on deciduous and flowering trees and shrubs. Nutrients are slowly released directly into the root zone to ensure maximum effectiveness. Apply spikes once in early Spring and once in mid-Fall when the ground is soft and moist. Use the diameter of the dripline to determine the number of spikes needed. Pack of 12.