Great question! Drainage allows excess water to exit your plant so that root rot and other watery issues are eliminated. Sounds complicated but it's not, we've made this easy by shipping our plants in growers' pots that fit into the decorative pot you've chosen. Simply take your growers' pot out of your decorative pot, bring it to the sink or shower, run cool water directly onto the roots of your plant, allowing all excess water to drain out of the holes in your growers' pot. Then place your watered plant beauty back into your pot and voila! You're done!