Mistletoe Cactus, Spaghetti Cactus - is an epiphytic, perennial cactus with pendulous cylindrical, jointed pale green stems and insignificant greenish white, lightly perfumed flowers. Unusual for a cactus, it grows in partial shade to full shade. Water regularly, but do not overwater. It is a good container plant. It is frost tender. Trim the plant to produce more dense foliage.