$56.95 ($1.19 / oz) Keyfit Tools Tree Fertilizer Spike Land Staker 2.0 Get Your Fertilizer Spikes 1 Foot Deeper for Deep Root Tree & Shrub Fertilizing ~Or use Your own granular Fertilizer Does NOT Come with fert Spikes
$10.18 Jobe’s 01000, Fertilizer Spikes, For Trees and Shrubs, 5 Spikes
$25.99 BioAdvanced 701900B 12-Month Tree and Shrub Protect and Feed Insect Killer and Fertilizer, 4-Pound, Granules
$24.88 Ross Rose & Flowering Shrubs Fertilizer Refills for Ross Root Feeder, 15-25-10 (Ideal for Watering During Droughts), 54 Refills