For several years we had a very nice plant called orange bulbine (Bulbine frutescens). Also called stalked bulbine, this South African native is a member of the lily family and one of the hardiest of the bulbines. The leaves are thick and succulent, with a bright green color.
Starting with a small plant bought at a nursery, the bulbine grew bigger every year, remaining green throughout the winter freezes. It bloomed almost constantly all summer, producing long stems with orange and yellow flowers. As the blossoms aged and dropped off, the stems just got longer and longer, producing more flowers on the end. The plant got plenty of sun and was in a rather dry place, which seemed to suit it. This past winter, however, one cold snap froze the entire plant and killed it. Our climate is just on the border of its temperature tolerance. It is possible that a more sheltered location would have been more conducive to its survival.