Potatoes need 1 to 2 inches of water a week. Too much water right after planting and not enough as the potatoes begin to form can cause them to become misshapen. Stop watering when the foliage begins to turn yellow and die off.
How often do you water newly planted potatoes?
In the absence of sufficient rainfall, a consistent watering schedule of once every four to five days is generally ideal for a young plant. Increase the frequency to once every two to three days when tubers form, which happens about the same time the plant flowers, to encourage uniform potatoes.
When should you water potatoes?
Generally, potatoes need between 1-2 inches of water per week; this could be provided by rain events or you to make up the difference.
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