It's best for watering at night, because there will be natural dew in the morning. In the middle of the day, the sun is strong, and watering can easily cause the plants to wither.
It is suggested to use the soaking basin method to water the sunflower in the growing period: put the flowerpot into the basin filled with water as a whole, make the water not exceed 2 /3 of the flowerpot, and soak it in the basin for 15-20 minutes, so that the basin soil is wetted more thoroughly.
At seedling stage, the basin soil should be kept moist and supplied with sufficient water. In summer, if the temperature is above 25 ℃, it is necessary to increase the amount of watering and the times of watering. Water in time during the growth period to prevent the leaves from wilting due to dehydration. But do not water too much at one time, too wet pot soil will make leaves yellow. The amount of water should be controlled before and during flowering.
This kind of plant can not be watered too often, too much water will lead to root rot, about once a week. Water in time when summer is hot and dry. In order to keep the temperature in winter, the times of watering should be reduced properly.
