Jobe's 2.2 lb. Tree and Shrub Fertilizer Spikes, (9-Pack) 01310 - The Home Depot
SIMPLYGRO Old Farmer's Almanac 1.5 lbs. Natural Tree and Shrub Fertilizer Spikes (6-Count TruSpikes) OFA-FS1333 - The Home Depot
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