By Laurelynn Martin and Byron Martin
The genus hoya, commonly called Wax Plant, is a large group of mostly climbing or trailing vines, or sometimes shrubs native to tropical Asia, the Pacific Islands and Australia.
They are most often found growing as epiphytes in tropical forests where they climb up into or hang from the branches amongst the mix of other epiphytic plants. As they often grow lower in the canopy, as well as at the tops of the tress, they have a great adaption to varying light levels.
Hoyas as Indoor Plants:
Hoyas are famous as indoor houseplants because they can tolerate very dry conditions. This comes from their epiphytic nature where they can go through a dry season with little, if any, rain for months at a time, surviving on the air moisture and dew at night. When given favorable growing conditions, they will flower with a wide variety of colors and flower sizes from the tiny ¼” in diameter for each flower to the giants up to 4” in diameter per flower. The blooms often form clusters or umbels of many flowers although some are singular. Some hoya flowers have a waxy appearance; others are fragrant.