|Orchids and staghorn ferns are two kinds of epiphytes.|
|Epiphytic orchid growing|
on a piece of tree branch
The proper lighting is important too. Situate them in bright, indirect light, just like they'd find if they were perched high into a dense canopy of a tree. Direct sunlight could dry them out too much.
Dry air can also be a problem, so during the summer months if your home is either very hot or very air-conditioned, you should give your epiphytes a spritz of water every couple days in between soakings.