When setting up an urban garden on a balcony, patio, or rooftop, a common question arises: do my planter boxes need a saucer underneath them? The answer isn't a simple yes or no, but understanding the purpose of a saucer helps you make the best choice for your plants and space.
Primarily, a saucer serves as a catchment tray for excess water that drains from the pot. Its core function is to protect your deck, balcony floor, or indoor surface from water stains, mineral deposits, and potential water damage. Without one, each watering can lead to messy runoff.
From a plant health perspective, saucers offer a mixed benefit. For moisture-loving plants, they create a reservoir, allowing roots to absorb extra water over time. However, for most plants, especially those prone to root rot like herbs and succulents, constant sitting in water is detrimental. The key is never to let the planter sit in standing water for extended periods; always empty the saucer shortly after watering.
So, when is a saucer necessary? It is highly recommended for any planter placed on wood, composite decking, finished concrete, or indoors. It's a courtesy for shared or multi-level spaces where runoff could affect neighbors below. For planters on bare soil, gravel, or grass, a saucer is often unnecessary.
Consider these practical solutions: Use saucers but be diligent about emptying them. Elevate planters slightly inside the saucer using pot feet or stones to improve air circulation and prevent the base from staying soggy. Alternatively, choose self-watering planters with built-in reservoirs or opt for planter boxes with integrated, attached saucers for a cleaner look.
Ultimately, using a saucer is less about strict plant needs and more about responsible maintenance and surface protection. By managing drainage wisely, you ensure a thriving urban garden that is both beautiful and considerate of your living space.