Corn does not transplant well. It should be grown from seed after all danger of frost is gone and temperatures stay above 50 degrees. Plant seeds two inches deep with 4-6 seeds per foot and 3 feet between rows. Planting rows closer than three feet can reduce yield. Overcrowding is the easiest way to kill corn production.
Corn needs continuous watering from planting until harvest.
The most critical time for water is between tassel development to harvest time. Rolled leaves are normal for corn plants during extreme heat but if the leaves roll or curl at times other than mid day, they probably require more water. When weeding areas of planted corn be careful not to damage the roots. Use mulch to keep the roots covered. The Indian method is to plant pumpkins or squash closely to protect the roots, reduce weeds and help retain moisture.