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Yes, those stores carryYes, those stores carry compost. The amount you need depends on your soil and garden plans. In general, you'll want to cover the area with at least once inch per season. For a 10 x10-foot garden, that would be 300 pounds of compost.

2015 Special Edition Garden GuideCooking Fresh with The Old Farmer's AlmanacThe Almanac Monthly Digital MagazineWhat the heck is a Garden Hod?