Potted mums should be watered whenever the soil feels dry and the pot feels light, which often means checking daily. Generally, they like to be kept moist but not soggy, so water them thoroughly when the top inch of soil dries out, allowing excess water to drain out of the pot. Depending on climate and temperature, this can range from every day to every few days; in hot weather or dry indoor conditions, watering daily or every other day is common, while cooler or humid conditions reduce frequency. Always ensure good drainage to prevent root rot. Checking soil moisture daily is key to keeping potted mums healthy and blooming well.