Cool Do Raised Garden Beds Need Liners Ideas. Avoid lining your garden beds with plastic, as this prevents drainage and could drown your plants. Having a liner in your raised garden bed can prevent these irritating invaders from growing and choking out your plants by acting as a physical barrier.
It insulates the soil against extreme temperatures. Web you should line a raised garden bed, since the pros outweigh the cons. You want to ensure that the timber has not been treated with cca as the nasty chemicals used for this can leach into the soil.
