2x Calathea 'Argentea' grey-greenPretty as a picture. The Calathea picturata 'Argentea' purifies the air! The grey green leaves with dark green edges are lovely. This jungle plant needs high humidity. That is why we spray the leaves at least once per week. This prevents the leaf edges from drying out. Always keep the potting soil moist, without letting the plant stand in water. Place the plant in full or partial shade. Not only are they decorative, they are also good for you!