This is an annual seasonal item at Costco. The Miracle Gro Moisture Control potting mix show up at Costco generally in Jan/Feb here in Northern California. This is a 55 Quart Bag and sells for $9.99 at Costco.
To make it harder for us consumers to compare costs, it is sold in Home Depot in 64 Quart Bags. As you can see below, the 64 Quart bag sells for $14.97 at Home Depot.
55 Quarts at Costco $9.99 = $0.18/quart
64 Quarts at Home Depot $14.97 = $0.23/quart
Is Costco Cheaper?
YES! The Miracle Gro Moisture Control Potting Mix is cheaper at Costco! Costco is 22% cheaper than Home Depot.
But it is only sold in the spring. So load up a few bags if you’re a gardener, enough to last you till next year! 😉