You can expect your
Common sunflower’s water needs to increase as the season moves on. During spring, you should water about once per week. Then, as the summer heat arrives, you will likely need to give a bit more water to your
Common sunflower, at times increasing to about three times per week. This is especially true of
Common sunflower that grow in containers, as the soil in a container is far more likely to dry out faster than ground soil when the weather is warm. In autumn, while your
Common sunflower is still in bloom, it may need a bit less water as the temperature has likely declined, and the sun is no longer as strong as it was in summer.