This popular, winter-flowering houseplant makes a great addition to nearly any indoor setting. It is also called Crab Cactus Plant. Christmas cactus is not only easy to care for but propagates easily too, making it an exceptional candidate for holiday gift. The Christmas cactus will adapt to low light conditions, but the plant will produce blooms more read. The plant requires frequent and thorough watering, during its active growth in spring and summer, keeping the soil slightly moist. Allow Christmas cactus moisture levels to drop and dry out some between watering intervals, but never completely, and never let the plant sit in water, as this will lead to root and stem rot.