Calathea ornata as dark green leaves with thin, pink stripes, making a beautiful plant with a striking contrast. Their oblong shaped leaves have deep purple colored undersides.Zebra plant is a special, highly-decorative houseplant with colourful, variegated foliage. It is a houseplant that really purifies the air, so it is a true eye-catcher in every interior that also makes a contribution to a better and healthier indoor climate.Calathea is also called the living plant because it closes its leaves at night and opens them again in the morning. The plant owes this ability to a small joint between the leaf and stem. Light moves the joints and, as a result, Calathea leaves open and close which is sometimes accompanied by a rustling sound.