The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes (Box of 24 Spikes - 6 Lbs) (OFA-FS1333-24)Brand: The Old Farmer's Almanac Features: Fast acting, long lasting, robust nutrition feeds trees, evergreens and shrubs 5 Inch TruSpikes are packed with fertilizer. They're easy to hammer in (no cap required) and will not break, crush or shatter Simple to use. For best results, feed once per season early spring, and late fall for continuous fertilization Contains natural ingredients like molasses that release nutrition directly into the root zone to