We are getting asked more frequently if it’s ok to add compost under new turf. The answer is yes, but only if it’s a mix of topsoil and compost. Like our Raised Bed Soil mix, which is a ratio of 70% topsoil and 30% peat free compost and screened down to 10mm.
Here’s why incorporating this mix is a wise choice for any turfing project:
- Enhanced Nutrient Supply
Topsoil alone may not provide all the nutrients your turf needs to thrive. When enriched with compost, this mix delivers a rich supply of essential nutrients, including nitrogen, phosphorus, and potassium. These nutrients are vital for promoting robust grass growth and maintaining a healthy green colour.
- Improved Soil Structure
Heavy or compacted soils can impede root growth, making it difficult for new turf to establish itself. A topsoil and compost mixture helps improve soil structure by adding organic matter that increases soil porosity. This allows roots to penetrate deeper and spread more efficiently, establishing a solid foundation for your turf.
- Better Drainage and Moisture Retention
Balancing moisture is key to successful turf laying. The combination of topsoil and compost enhances both drainage and moisture retention. While the compost helps retain moisture, preventing the turf from drying out, the improved soil structure ensures excess water drains away, preventing waterlogging and root rot.
- Enhanced Root Development
A strong root system is crucial for turf stability and resilience. The nutrients and improved soil conditions provided by a topsoil and compost mix encourage healthy root development. This not only helps the turf anchor securely but also increases its resistance to wear and tear.
- Long-Term Lawn Health
Starting with a nutrient-rich, well-structured base layer sets the stage for long-term lawn health. By using a topsoil and compost mix, you are investing in the future of your lawn, ensuring it remains healthy and vibrant for years to come.
- Why can’t you use 100% compost under turf?
Compost breaks down and shrinks over time, this will make your lawn uneven as parts sink lower than others.
Our premium topsoil, screened down to 10mm, is still a great option for laying under turf and offers excellent value for money.
As always if you need any advice, please send us an email to turf@oakleyturf.com or give us a call on 01255 886096.










