Peruvian Cactus produce lovely blossoms. Like Prickly Pear Cactus they grow like weeds. They have a tall unbranched column which reaches about 3 or 4 feet and then falls over. Within a few weeks lots of new columns begin all along the column that fell. The blossoms are quite large -- 6 or 7 inches. They bloom at night and don't last more than a few hours of daylight.
Here are some photos from today: