This section is from the book "The Gardener's Monthly And Horticulturist V20", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
While digging potatoes recently, I found a large white potato of the "Ice Cream" variety that had made a new or second growth; it had sent up a branching shoot about eight inches high. On this shoot, about an inch above its connection with the parent tuber, were three small new potatoes, about an inch in diameter. These were a beautiful pinkish-blue color. I have been intimate with potato raising, and have carefully observed their growth for a third of a century, but never observed a similar freak before. How is it to be accounted for ?