When it comes to any sort of plant, but once again especially when it comes to indoor plants, drainage is one of the most important considerations. A plant saucer is a small plate for collecting surplus moisture from potted plants. The water which then flows from your plant pot is collected in planter tray. It might easily pour into your carpets, floors, and furniture if you do not do this. Potted plants might benefit from the addition of a plant trays to their pots. Using them has the benefit of increasing humidity.