How Do You Line an Elevated Planter Box

You can use a plastic tarp or an old pool cover as a raised bed liner. Since these plastics are waterproof, they will not allow good drainage if used to line the bottom of your raised bed. Your best bet is to use this type of plastic to line the sides of a raised bed made of older wood.

What do you line a raised garden box with?

Avoid lining your garden beds with plastic, as this prevents drainage and could drown your plants’ roots. If you have a weed and pest problem, consider installing a combination of metal mesh and fabric or hardware cloth and cardboard to get both benefits at once.

What do you put at the bottom of a raised planter?

What do I put on the bottom of a raised garden bed? The bottom of a raised garden bed should be a layer of grass clippings, leaves, wood chips, straw, and other organic material. The cardboard should be placed on top of that layer. The organic material will turn into compost, while the cardboard will prevent weeds.