Fan flowers are drought-tolerant and heat-resistant, so they do not require an intense watering schedule. You should only be watering your plant when its soil feels dry to the touch. If you are replanting or repotting your fan flower annual make sure to keep it well-watered for at least the first 2 weeks, or until they become fully established. Do not allow their soil to stay too moist, this will cause their roots to sit in too much water and could result in root rot.