Watering on its own Even if you don't have a lot of time to dedicate to plants, flower pots are a wonderful method to care for them. They regularly refresh themselves, keeping them hydrated and looking new even if they haven't received water in a week or more. A special wick in them pulls water from the bottom, moves it to the plant, and then provides it as required. For several days, the self-watering container ensures that the plants receive all the water they need. For this process the drainage holes are provided in the pot and the excess of water will be collected over in bottom tray. This keeps water availability for roots and avoides root rotting.When you fill too much water the water will be leak out through the lip provided in the bottom tray this protects plants from flooding.