To care for your calathea: Choose a bright but shaded spot within a warm room. You may place it in your bathroom, if it is bright. It cannot withstand sudden changes in temperature, and hot and cold drafts. So do not keep it in front of a heater, an air conditioning vent, or a leaky window. Water it and mist it regularly. It loves moisture. The best way to water a Calathea Plant is to use distilled water, rain water, or allow your tap water to sit out over night before using it. Keep the soil of a Calathea Plant moist but never soggy.