Calathea roseopicta ‘Medallion’

Water when the soil surface is dry. This plant wants water when the top of the soil is dry, but you can still feel moisture just below the surface. This plant will often fall into a once-a-week watering cycle, but remember that your watering should be based on the moisture left in the soil, which will depend partly on the moisture in the room and the weather outside. The soil 'surface'' goes a bit deeper for larger pots; for example, a plant in a 14-inch diameter pot should dry out a couple of inches deep before you water it, while a plant in a 4-inch pot will only want to dry out in the top ½ inch or so of soil. If you see yellowing or brown tips, this may be a sign of underwatering but is usually related to the humidity of the room. Moving the plant near a bathroom or kitchen sink is often helpful.

Leaves will curl in on themselves when underwatered or in too much direct sun (not to be confused with emerging leaves, which will also be curled).

The natural daily posture of the leaves is to droop down a bit during the day and then move to a more upright pose at night. This doesn't mean they're wilting or needing more water!