Porcelainflower is a species of flowering plants belonging to the taxonomic genus Hoya, which are sometimes called the 'Wax plants'. There are lots of species of Hoya, such as H. bella, H. multiflora, and H. australis (or H. kerrii). Hoya Carnosa is the most commonly species and the most common used of all. They are popular for cultivating because they look elegant and they are relatively easier to cultivate than other plants, especially among flowers. Hoya can be reproduced by people’s work as they are popular for cultivation. There is a process to reproduce Hoya appropriately. First of all, leave their leaves until they have only 2~3 leaves, and make their length about 10cm by cutting them off (when cut them, they should be cut with one cutting aslant.) Using good soil is also important; sand around river can be good one. When the roots grow enough, they are ready to move, and the appropriate temperature is around 68F.