In the spring and autumn period when the climate is suitable, water can be supplied every 3-5 days. At this time, water should not be lacking for growth.In summer, evaporation increases and needs to be watered twice a day, sooner or later.With the arrival of winter, the temperature gradually decreases, the growth rate slows down, can be watered every 7 days or so, pot soil is not dry without watering.
It is not necessary to have sufficient water in all periods. In some periods, it is necessary to control water properly. For example, it is not necessary to water too much when it is just planted. It is also necessary to control water about 7 days before it goes out of the garden and keep it dry.
Although petunias like water, they should not be watered too much each time, and they should not accumulate water, so they can be watered thoroughly.If you can't control the amount of watering at this time, you can observe that there is a little water flowing out of the bottom of the pot, or weigh the weight of the pot to feel the water content in the soil.