Jobe's 4 lb. Tree and Shrub Fertilizer Spikes (15-Pack) 01610 - The Home Depot
Jobe's Jobe's Tree and Shrub 9-Count Tree Food in the Plant Food department at Lowes.com
Amazon.com : Miracle-Gro Tree & Shrub Fertilizer Spikes - 12 PK and Gatsby Moon Oakleaf Hydrangea (Quercifolia) Live Shrub, White to Green Flowers, 1 Gallon : Patio, Lawn & Garden
Miracle-Gro Tree & Shrub Plant Food Spikes, 12 Spikes/Pack, 12 Count (Pack of 1) | eBay
The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes – SimplyGro