Does bark mulch help prevent frost

Frost can be one of the biggest challenges for gardeners, striking without warning and causing damage to roots and young growth. Bark mulch can act as a protective layer, helping to lessen the impact of cold snaps. By spreading it over the soil, you create insulation that slows down the rate at which heat escapes from the ground. This means that the soil stays a little warmer overnight, reducing the risk of frost penetrating deep enough to harm roots.

The effectiveness of bark as a frost shield depends on how it is applied. A layer of around 5 to 7 centimetres is usually enough to provide good coverage without restricting the movement of air and water. It is important, though, not to heap bark directly against plant stems, as this can trap moisture and lead to rot. When used thoughtfully, bark mulch helps keep the soil temperature steadier, which is particularly valuable for tender plants or those in exposed beds.

Another benefit is that bark gradually breaks down, adding organic matter to the soil and improving its structure. For those seeking reliable supplies, AHS LTD offers bark suitable for mulching, giving gardens both winter protection and long-term soil improvement.