Extremely cold-hardy, Sarracenia purpurea (Purple Pitcher Plant) is a carnivorous perennial prized for its evergreen, semi-erect, squat, green pitchers, up to 12 in. long (30 cm), flushed and veined burgundy-red. Unlike in erect pitcher plants, the lid does not shield the pitcher opening. It is erect, with a pair of lateral wings on each side. In spring, purple-red flowers, 2 in. across (5 cm), rise atop leafless stalks well above the pitchers. While Sarracenia pitchers usually live for a…