With my daughter's help, I dug up the last of the potatoes from my April planting today. Papa Cacho is a tough, long lasting plant. It has been exactly 150 days since I planted it (April 24th) and the vines have been dying over the last week or so. I just had 7-8' of them planted and it produced over 16 pounds. That is almost exactly how much I got from 25+ feet worth of red, yellow, blue, and purple potatoes on July 19th (post #364 in this thread). So these take a lot longer, but they seem durable and produce a nice yield.
They are also very large. The biggest is almost 9" long. In addition to the quarters and ruler, this pic also has a Red Boskoop apple (upper left), which is 4" wide by 3.5" tall.