Light: A Calathea Plant likes bright indirect light; so placing it in front of an east, west, or north window is ideal. Too much direct sun burns the leaves of a Calathea Plant and causes the beautiful leaf colors to fade.
Water: Calathea Plants are very sensitive to the water you use. Hard water, soft water, fluoridated water, or water of poor quality causes the leaves of a Calathea Plant to turn brown from leaf burn. The best way to water a Calathea Plant is to use distilled water, rainwater, or allow your tap water to sit out overnight before using it. Keep the soil of a Calathea Plant moist but never soggy. Allow the top 2-3” to dry out before watering. Never let a Calathea Plant sit in water.
Temperatures: Calathea Plants like temperatures between 65-80 degrees, and do not like cold drafts or temperatures below 55-60 degrees. Hot temperatures cause the leaves of a Calathea Plant to curl.