Depending on the location of the plants, it's best to water them frequently when they are indoors. Just make sure that they are far away from any heating appliances. The natural humidity of the room can be enough, but the plant might prefer the high humidity outdoors during the summer, especially if it resembles that of a rainforest's habitat.
Water the plants once every two weeks and lightly mist them at least thrice every seven days to keep them healthy if they are planted in a pot. One way of checking it is by removing the pot and seeing if the roots are already dry. This is possible with plastic pots, but you can always check with a moisture meter if you can't remove the pot.
When grown outdoors, you need to consider the plant's rainwater, especially in spring and summer. You might want to water this once every 1-2 weeks during the summer.
Avoid watering this during the late fall and winter, and only provide them a drink when you see brown spots on the leaves. They only need occasional watering when planted in your garden, and you need to transplant them indoors so they can survive the cool conditions during the winter. Some use a lot of mulch during the fall, but when growing in a cold zone, you should consider digging it and transplanting it, watering it occasionally, and waiting for the frost to pass.