Epiphyte

An epiphyte (or air plants) is a plant that grows upon another plant (such as a tree) non-parasitically or sometimes upon some other object (such as a building), derives its moisture and nutrients from the air and rain and sometimes from debris accumulating around it, and is found in the temperate zone (as many mosses, liverworts, lichens and algae) and in the tropics (as many ferns, cacti, orchids, and bromeliads. Without too much effort, I created this setting without even given it a thought a while back. I had an extra Ficus religiosa and did not know where to put it, so it ended up here, in the crotch of an oak tree. Now, there is no way to get it out without seriously injuring or even kill it. So it stays. This ficus can grow to be very large, and I think it will start to send out aerial roots and may take over this oak tree. A battle for survival of the fittest?