How Much Compost Do I Need for My Lawn?

Another common question we hear is: “How much compost should I use for my lawn?” Whether you’re installing a new lawn or maintaining an existing one, applying the right amount of compost is key to success. Here’s a simple guide.

Do I Need Compost for a New Lawn?

Yes! Compost acts as a nutrient-rich foundation for Kikuyu or LM sod. It improves soil structure, boosts water retention, and helps roots establish quickly. Without it, grass can struggle to root deeply, especially in sandy or clay-heavy soils.

Recommended application for new lawns:

• Spread a 5–10 cm layer of compost mix over the soil before laying turf.

• This ensures strong root contact and long-term lawn health.

How Much Compost Should I Use for Top-Dressing?

Top-dressing is perfect for established lawns that need a health boost.

Recommended application for top-dressing:

• Apply a 5–10 mm thin layer of compost across the entire lawn.

• Rake lightly to ensure even coverage without smothering the grass blades.

How Often Should I Compost My Lawn?

• At least once a year, preferably in spring (August–October).

• For high-traffic lawns or poor soil, twice a year (spring and autumn) works best.

Can I Use Any Compost?

Not all composts are equal. Quick Lawn’s Special Compost Mix is designed specifically for Kikuyu and LM grass. It’s made with:

• Sifted, weed-free topsoil

• Premium compost

• Superphosphate for stronger root growth

This blend provides a slow-release nutrient boost, unlike ordinary composts that break down too quickly.

Quick Compost Calculator

• For top-dressing: 1 cubic metre of compost covers roughly 200 m² at 5 mm thick.

• For new lawns: 1 cubic metre covers about 20 m² at 5 cm thick.

👉 The bottom line: Compost is the secret to a thick, healthy lawn. Apply the right amount in September, and you’ll enjoy greener, stronger grass all summer long.