Gardenia plants are prized for the strong sweet scent of their flowers, which can be very large in size in some species. Gardenia jasminoides is cultivated as a house plant. This species can be difficult to grow because it originated in warm humid tropical areas. It demands high humidity to thrive and bright (not direct) light. It flourishes in acidic soils with good drainage and thrives on [68-74 F temperatures (20-23 C) during the day and 60 F (15-16 C) in the evening. Potting soils developed especially for gardenias are available. They grows no larger than 18 inches in height and width when grown indoors. In climates where it can be grown outdoors, it can attain a height of 6 feet. If water touches the flowers, they will turn brown. In China and Japan, Gardenia jasminoides is called zhīzi (栀子) and kuchinashi (梔), respectively. Its blossom is used as a yellow dye, used on fabric and food (including the Korean mung bean jelly called hwangpomuk). Its fruits are also used in traditional Chinese medicine for their clearing, calming, and cooling properties. In France, gardenias are the flower traditionally worn by men as boutonnière when in evening dress.