$12.49 The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes (Box of 6 Spikes)
$39.99 Generic Miracle-Gro LiquaFeed All Purpose Plant Food Advance Starter Kit and Flowering Trees & Shrubs Plant Food Bundle: Feeding as Easy as Watering
$141.81 Jobe's 02611 Evergreen Tree Bulk Fertilizer Spikes, 160 Count, Brown
$24.88 Ross Rose & Flowering Shrubs Fertilizer Refills for Ross Root Feeder, 15-25-10 (Ideal for Watering During Droughts), 54 Refills
$26.99 GEMPLER'S Liquid Iron Supplement for Plants – Commercial Grade Chelated Iron for Trees, Shrubs, Plants, Crops - 1 Gallon