http://xrl.us/m9dj 10 June 2006. Zone 5. There are three rows of about 24 feet. One row of Pontiac (red) and one row of Superior (white), plus a mixed row. Unfortunately, I planted the rows only two feet apart and had to truck in five wheelbarrows of dirt to hill the plants. No sign of the Colarado Potato Beatle as yet. These potatoes were planted in April, just when the grass started to show some growth. The two major frosts we had did not affect the plants in the least. The first full blossoms appeared today 10 June 2006. Durgan.