How to Care for a Calathea Marion
Light: Calathea Marion plants prefer bright indirect sunlight. Direct sunlight in the morning and afternoons is okay as the light is less harsh. If your room has a window you will be fine, although they grow faster the brighter the room is.
Water: The soil should remain slightly moist, but not wet. Press your finger about an inch into the soil and if it is damp, do not water it. If it is dry it is time to water.
Soil: Well-draining potting mix will let a Calathea Marion thrive.
Humidity: The average humidity in a house is great