The amount of coverage provided by a bale of straw depends upon the size of the bale, the type of straw and whether the area is being freshly covered or is already covered. According to John Deere, a bale of pine straw usually covers about 40 square feet.
Most pine straw bales are roughly 4 cubic feet. A typical pine straw bale covers roughly 40 square feet at a depth of 2.5 inches over fresh ground. The same size bale covers about 70 square feet when covering an area with an existing straw covering. If wheat straw is used, a typical bale can cover roughly 500 square feet when spread by hand and about 1,000 square feet when spread using a blower.