Skip to content
hortyard

Pine straw calculator

Enter the size of your beds. You get the number of bales, as a range, because bales differ in size and how tightly they are packed.

You need 3 to 4 bales of pine straw. Example: 200 sq ft of beds, 3 in deep.

Not sure of the area? Length times width in feet; for a round bed, 3.14 times the radius squared.

Estimates. Bag sizes, material density and settling vary; confirm quantities with your supplier.

Good to know

Extension guides from Louisiana and Alabama both put one bale at about 50 square feet, but at different depths: 3 inches for a 25-pound, 3 cubic foot bale, and 5 inches for a looser one. Bales on the market are not one size, so the calculator gives a range.

For a new bed, start with about 3 inches. Pine straw breaks down fairly quickly and usually needs a fresh layer each year; a top-up of about an inch makes a bale go roughly three times as far.

Fresh needles are fluffy and settle after rain, so a layer that looks thick on day one will be thinner within weeks.

The arithmetic

A bale covers about 50 square feet at 3 inches deep if it is tightly packed, and about 50 square feet at 5 inches if it is loose. So one bale holds 150 to 250 square-foot-inches: multiply your area by the depth and divide by those two numbers for the range.

Questions

How many bales for 500 square feet?

At 3 inches deep, 500 times 3 is 1,500 square-foot-inches; divided by 250 and 150, that is 6 to 10 bales, depending on how tightly the bales are packed.

How do I spread pine straw?

Break the bale open, shake out handfuls and let them fall loosely, then tuck the edges along beds and walks. Keep it back from house siding and stems.

How often do I add more?

Pine straw breaks down fairly quickly, so most beds need a fresh layer each year. A top-up of about an inch makes each bale go much further than the first layer.

Typical values from these university extension guides: