Can I put bark mulch directly on soil

Putting bark mulch directly onto soil is a common practice in UK gardens and can bring a host of benefits when done correctly. Bark acts as a natural cover, helping to retain moisture in the soil beneath, which is especially valuable during dry spells. It also helps to suppress weeds, reducing the need for constant weeding and keeping garden beds looking tidy.

Before spreading, it’s important to ensure the soil is prepared properly. Removing existing weeds and lightly loosening the top layer of soil will help the bark settle and prevent gaps where weeds might grow. While bark can go straight onto soil, some gardeners prefer to lay a thin membrane underneath to improve weed control further.

The depth of bark is also key. Too thin, and its benefits diminish; too thick, and it can restrict water and air reaching plant roots. A depth of around 5–7.5 cm generally works well. Over time, the bark will gradually break down, enriching the soil with organic matter.

For gardeners sourcing quality bark, AHS LTD offers a variety suitable for direct application on soil, ensuring your garden beds remain healthy, neat, and low-maintenance throughout the seasons.