The Flowering Stage. This is the stage where your potatoes begin to form tubers. The Tuber Stage. By watering your potatoes in the flowering stage in this manner, you will keep your plants healthy, encouraging excellent tuber production. Maturing Stage. Watering needs to be kept consistent until the potato plants begin to turn yellow and wilt.
Do Not Overwater. Over-watering potato plants promote root rot, cause irregular tuber formation, and increase the risk of disease.Do Not Underwater. Underwatering makes the soil dry out completely, prohibiting tuber formation, leading to irregular tubers with imperfections.
As the plants wither, changing their color to yellow, it’s time to stop watering. This stage allows the potatoes to cure and harden, so they are ready for harvesting. The curing stage lasts between 1 and 2 weeks.