Calatheas like medium to bright indirect. They do not like direct light as this will burn their leaves. They will also tolerate shade and low light conditions making them an easy choice for most people.
WATERING YOUR CALATHEA
In the summer from March to September keep your calatheas soil moist, we recommend watering twice a week. Watering Wednesday and Soak Sunday.
In the winter from October to February reduce watering to once a week. Houseplant watering guide
HUMIDITY FOR YOUR CALATHEA
Calatheas likes room humidity to be around 60%. Normal room humidity is around 40-50%. To increase humidity you can use a Humidifier, place your calatheas next to other houseplants or you can fill a saucer with pebbles and water, place them on top of this.
This isn't a necessity but for best results from March to August give them some houseplant fertiliser every month when watering.
REPOTTING YOUR CALATHEA
When the roots start to grow out of the bottom opening of the pot, it is time to put them into a slightly larger pot.
GENERAL CALATHEA CARE PROBLEMS
Browning leaves, not enough humidity or water is too hard. Use rainwater or distilled.
If they start to look a bit shabby, you can cut some of their leaves off to promote new growth especially the lower leaves.