We've never really seen disease or pests on the potato volunteers but we have never grown them in any substantial number. Hilling is a new thing for us. They are really taking off since chitting them and we already hilled twice. Once when 8", filling in the trench which was about 4". Then a week later adding another 2-3" of barky soil/mulch and mounding around the plants, leaving about 4" exposed.
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