The Pencil Cactus makes a lovely addition to any collection. Being native to India and certain regions of Africa, these arid plants love being in bright sunny locations. Inside the home they can reach over 6 feet tall, but can be maintained by regular trimming at its joints. Being so hassle-free, this desert gem makes the perfect gift for any collector. The sap inside of the Pencil Cactus is irritating to the skin and eyes, so be sure to wear protective garments when handling this plant.