Montaneous regions in tropical parts of the world offer many different niches for differentiation of epiphytic Orchids.

Also, epiphytic Orchids are very exposed to the elements. Most of them could not survive to low temperatures.

Tropical regions of the world have greater biological diversity than temperate regions. The epiphytic way of life gives orchids advantages in rain forest allowing them access to more direct sunlight, greater number of canopy animal pollinators and possibility of dispersing their seeds via wind.

Tropical regions are rich and diverse because of consistent and stable weather patterns. More precipitation and evaporation than temperature zones. This subsequently harbors pollinator thriving in such habitats and eventually building a strong ecosystem.