Opuntia subulata, which some botanists consider to be Austrocylindropuntia subulata), is widely cultivated in living fences in South America, and likely it originated in Peru. It has numerous cylindrical green stems with numerous yellow spines and, understandably, is effective as a living fence. These plants are a dwarf monstrose form known as 'Gumby.' These plants are rooted cuttings in one-gallon pots.