The epiphyllum, or orchid cactus, is a hybrid of an epiphytic cactus that lives in the jungles of Central and South America. Epiphytes generally grow on other plants but take their water and nutrients from the air and rain. Epiphyllum bloom in 12-inch (or larger) flowers in various colors and combinations of colors. The epiphyllum is easy to care for and thrives when its roots are cool and moist. For this reason, choose a plastic rather than clay pot, as clay tends to hold heat. Transplant your epiphyllum every seven years, after the blooming period.
Blend the potting soil ingredients: 50 percent potting soil, 30 percent peat moss and 20 percent coarse sand.
Remove the epiphyllum from its current pot by laying the pot on its side and carefully tipping the plant out. Do not remove the old potting mix from the roots, and try to disturb the roots as little as possible.
Plant the epiphyllum in the new pot at the same depth as it was growing in the old one. Pack the soil around the base of the plant. Do not water the plant for one week after potting, then water lightly (1 inch of water) for one month before resuming your normal watering routine.