Potted mums should be watered whenever the soil starts to feel dry and the pot feels light. This often means checking the soil daily. In warmer climates or during summer, watering may be needed daily, while in cooler climates or fall, watering every two to three days or about weekly could suffice. It is important to keep the soil moist but not wet and to ensure good drainage to avoid root rot. Water deeply until it runs out of the drainage holes and allow the soil to dry slightly before watering again.