That's an excellent question for any urban gardener! The answer depends largely on the specific urban planter box you purchase. Many modern urban planter boxes are designed as complete, integrated systems. These often come with a fitted, removable liner bag already included. This liner is crucial as it protects the planter's interior material (like metal or wood) from constant moisture and soil, significantly extending its lifespan. It also simplifies cleaning and replanting.
However, some planter boxes, especially more basic or DIY-style models, may not include a liner. In this case, you would need to line it yourself. This can be done by purchasing a separate, appropriately sized liner bag or using a DIY material like a heavy-duty plastic sheet with drainage holes poked in the bottom. The primary function is always the same: to contain the soil and water while allowing excess moisture to drain out, preventing root rot.
We recommend checking the product description or specifications of your planter box carefully. Look for terms like "includes inner liner," "integrated drainage system," or "removable pot." If a liner isn't included, don't worry. High-quality, durable liner bags are widely available and easy to install. Whether your box comes with one or you add it yourself, using a proper liner is a simple step that ensures your plants thrive and your planter box stays in great condition for seasons to come.