$56.95 ($1.19 / oz) Keyfit Tools Tree Fertilizer Spike Land Staker 2.0 Get Your Fertilizer Spikes 1 Foot Deeper for Deep Root Tree & Shrub Fertilizing ~Or use Your own granular Fertilizer Does NOT Come with fert Spikes
$12.49 The Old Farmer's Almanac Tree & Shrub Fertilizer Spikes (Box of 6 Spikes)
$19.43 Down to Earth All Natural Tree & Shrub Fertilizer Mix 4-2-4, 5 lb
$97.77 Agriform 20-10-5 Slow Release Fertilizer Tablets (1000 x 10g)
$73.88 The Andersons Professional PGF Complete 16-4-8 Fertilizer with Humic DG 10,000 sq.ft.