What is the Function of the Hole at the Bottom of Flower

Pots?

Every flower pot has a hole at its bottom What is it for When watering we might put in more water than the flowers need This hole can let the extra water drain away Imagine if there is not a hole at the bottom and the water cannot go away the flower roots will be soaked If they are in water for a long time they will rot and the flowers themselves will eventually wither.