There are many reasons why you should consider using bark in your garden. However, the main benefit bark can offer you is as a mulch. Mulch is any material that is laid over the surface of the soil, such as barks or gravels and they help your plants to thrive. Nature creates its own mulch as leaves and bark build up underneath trees, so it’s a great idea to try and recreate this in your own garden.
Laying bark two to three inches deep on your flower beds will act as a protective layer for your soil. In the summer the bark will be able to reduce the amount of moisture lost from the soil through evaporation. When there is heavy rain the bark will reduce the amount of soil erosion as it absorbs the impact of the raindrops and then gently feeds the water to the soil below. In general the bark will protect plants from temperature changes, insulating the roots during the winter.
The bark will slowly decompose, meaning that after two to four years it will need replacing. However, this is not a drawback. As the bark decomposes it will add nutrients to the soil, improving its structure and increasing fertility. The bark will also help stop weeds from growing, especially if you use lay membrane underneath, meaning that you can sit back and enjoy your garden!