What is drain matting? Why is it used for raised garden bed liners?

Drain matting, also known as drainage fabric or filter fabric, is a type of porous material that is used in landscaping and horticulture to improve drainage and prevent soil erosion. It is typically made from a lightweight, synthetic material, such as polypropylene or polyester, and is designed to allow water to pass through while retaining the soil.

Drain matting is often used in a variety of landscaping and horticultural applications, including:

1. Landscaped beds: Drain matting is often used in landscaped beds to improve drainage and prevent soil erosion. It is typically placed underneath the soil and covered with a layer of mulch to help retain moisture and suppress weeds.

2. Potted plants and raised garden beds: Drain matting can also be used in pots to improve drainage and prevent excess water from accumulating in the soil. It is typically placed in the bottom of the pot and covered with a layer of potting mix.

3. Green roofs: Drain matting is often used in green roofs to improve drainage and prevent excess water from accumulating on the roof surface. It is typically placed beneath the soil and plants to allow excess water to drain away.

Overall, drain matting can be a useful tool for improving drainage and preventing soil erosion in a variety of landscaping and horticultural applications. It is important to choose the right type and thickness of drain matting for your specific needs and to follow the manufacturer's instructions for installation and use.