Absolutely! Using a liner inside your urban planter boxes is not only acceptable but often recommended for successful container gardening. A liner serves several crucial purposes. Primarily, it acts as a protective barrier between the moist soil and the inner walls of your planter. This is especially important for wooden planters, as it significantly slows down the rotting process, thereby extending the lifespan of your beautiful boxes. Liners also help to retain soil moisture, meaning you may not need to water your plants as frequently—a great advantage on hot city days.
When selecting a liner, you have several good options. Heavy-duty plastic, such as a pond liner, is a popular and effective choice. For a more natural and biodegradable option, consider using landscape fabric or burlap; these materials still protect the wood while allowing for excellent breathability and water drainage. The key step, regardless of the material, is to ensure proper drainage. Always puncture or cut several holes in the bottom of your liner before adding soil. This allows excess water to escape freely, preventing waterlogged soil which can lead to root rot and other plant diseases. A simple liner is a small investment that pays off with healthier plants and more durable planters.