Fockea edulis

 Grow in full sun to light shade and in a well-drained soil and irrigate occasionally to infrequently. A thin vining semi-evergreen plant that can grow stems 10 feet long or more, arising from large (to 2 feet wide) succulent tuberous roots that are twisted and gray colored with wart-like bumps called tubercules. Hardy to light frost and short duration temperatures down to around 25°F.