$12.99 Purely Organic Tree & Shrub Fertilizer Plant Food Spikes (Box of 6 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
$39.99 Generic Miracle-Gro LiquaFeed All Purpose Plant Food Advance Starter Kit and Flowering Trees & Shrubs Plant Food Bundle: Feeding as Easy as Watering