Dim sum various mixtures of flowers with green tea, black tea or oolong tea. Flowers used include jasmine, gardenia, magnolia, grapefruit flower, sweet-scented osmanthus and rose. There are strict rules about the proportion of flowers to tea. Jasmine tea is the most popular type of scented tea, and is often the most popular type of tea served at yum cha establishments. The above teas are produced in most of China. Chinese tea bushes ("Camellia sinensis") are cultivated in the mountain areas of tropical and subtropical regions or wherever there is a proper climate, sufficient humidity, adequate sunshine and fertile soil. Chinese tea
Japanese tea ceremony "roji." Seasonality and the changing of the seasons are important to the enjoyment of tea. Traditionally the year is divided by tea practitioners into two main seasons: the season, constituting the colder months (traditionally November to April), and the season, constituting the warmer months (traditionally May to October). For each season, there are variations in the "temae" performed and utensils and other equipment used. Ideally, the configuration of the tatami in a 4.5 mat room changes with the season as well. There are two main ways of preparing "matcha" for tea consumption: and , with the best quality tea leaves