The holiday cactus joins Norfolk Island pine trees and poinsettias as plants beloved during the winter season. While it may seem like an unusual holiday plant, the Christmas cactus, also called holiday cactus or Thanksgiving Cactus, is flush with bold blooms, making it a welcome sight in the middle of winter. The fleshy segmented stems of the plant are flattened leaves and slightly serrated on each side. In late fall or early winter, tubular flowers bloom on the ends of each stem. Originating in the Brazilian rainforest, all varieties of a holiday cactus can be started any time of the year indoors as a houseplant until the summer when you can replant or move it outdoors. Given the right care, your cactus should grow fast and bloom at the beginning of each winter.