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How Much Compost is Needed to Cover 400 Square Feet of Garden Soil?
How Much Compost is Needed to Cover 400 Square Feet of Garden Soil?. Compost is the gardener's best friend, but an under- or over-application of the decomposed organic material either doesn't do the proper job or wastes money. A good amount of compost for yearly maintenance is about 1 inch added in the fall or spring.
Compost is the gardener's best friend, but an under- or over-application of the decomposed organic material either doesn't do the proper job or wastes money. A good amount of compost for yearly maintenance is about 1 inch added in the fall or spring.
Depth of Compost
Application of compost can vary, but approximately 1 inch of compost layered on top of a garden is normally recommended.
Cubic Dimensions
Following the formula for figuring cubic dimensions, a 400-square-foot garden with 1 inch of compost would round up to 1.25 cubic yards of compost.
Compost Weight
Finished, dry compost weighs about 540 pounds per cubic yard.
Ordering Compost
If ordering in bulk, a homeowner would request 1.25 cubic yards of compost from the garden center, or 16 to 20 40-pound bags.
