It's a myth that sellers have started, about these "indestructible" plants, that don't need watering, but only when we remember. Too bad, as for them to sell more plants, there are now plants everywhere that don't get their needs met! A ZZ plant is not a plant that likes to be left unwatered. It likes to be watered regularly, but the soil to dry between waterings. In reality, if you leave it unwatered it will go into dormancy and the leaves will fall.