Can You Compost Grass

Composting involves mixing grass clippings and other plant materials with a small amount of soil containing microorganisms that decompose organic matter. Grass clippings are excellent additions to a compost pile because of their high nitrogen content. Grass clippings should not be the only compost material.

Can you compost just grass?

Grass clippings are an excellent source of nitrogen for the compost, too. You cannot compost grass clippings on their own: you must add a source of carbon, otherwise the grass remains a slimy green mess.

How long does it take to compost grass?

Grass clippings left on your lawn after mowing will decompose in 3–4 weeks on average. Within 1–2 weeks the grass clippings will often no longer be visible, because they will reach the soil level and begin to break down. Grass clippings added to compost will break down fully in 1–3 months.

James H. Sterling

James H. Sterling

Environmental Science & Climate Journalist

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.

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