$59.97 Humboldts Secret Plant Enzymes – Best Plant and Root Enzymes – 7000 Active Units of Enzyme per Milliliter – Quality Plant Food and Plant Fertilizer – Highly Concentrated – 16 Ounce
$26.22 Jobe's Organics Fertilizer Spikes (Tree and Shrub, 15 Spikes)
$10.18 Jobe’s 01000, Fertilizer Spikes, For Trees and Shrubs, 5 Spikes
$11.06 Miracle-Gro Tree & Shrub Plant Food Spikes, 12 Spikes/Pack
$39.88 The Andersons PGF Balanced 10-10-10 Fertilizer with Micronutrients and 2% Iron (5,000 sq ft)