Protecting your wooden planter boxes from rot is essential for their longevity and your plants' health. The right liner creates a crucial barrier between the moist soil and the wood. Here’s a breakdown of the best liner options.
A heavy-duty plastic sheet or pond liner is a highly effective, impermeable barrier. Ensure you puncture holes in the bottom for drainage to prevent waterlogged soil. For a more environmentally friendly option, consider a permeable landscape fabric. It allows water and air to pass through while keeping soil contained, reducing moisture buildup against the wood.
Another excellent choice is using a separate, removable plastic insert or pot placed inside the box. This makes replacing the liner or changing plants much easier. Regardless of your material, never line the very bottom completely; always ensure adequate drainage holes are present. A layer of gravel or pebbles at the bottom, beneath the liner, can further improve drainage.
Ultimately, the best liner balances protection with proper drainage. Avoid materials like cardboard or newspaper, as they decompose quickly. By adding a durable liner, you significantly extend the life of your beautiful wooden planters.