Prunus mume, also known as Chinese plum, is a tree species in the family Rosaceae. It is also referenced by its flowers as plum blossom. Although referred to as a plum in English, it is classified in the Armeniaca section of the genus Prunus, making it an apricot. Mei flowers, or meihua (梅花), which bloom in the late winter and early spring, notably during the spring festival (春節), symbolize endurance, as they are the first to bloom despite the cold; the flower is one of the Three Friends of Winter.

The plant is intimately associated with art, literature, and everyday life in China, from where it was then introduced to Korea, Vietnam, and Japan. In East Asian cuisine (Chinese, Japanese, Korean, and Vietnamese cuisine), the fruit, known as meizi (梅子) in Chinese, is used in juices and sauces; as a flavoring for alcohol; and may be pickled or dried. It is also used in traditional Chinese medicine. Meihua are also appreciated for their characteristic fragrance, which is unique among apricots.

Prunus mume should not be confused with the plum Prunus salicina, a related species also grown in China, Japan, Korea, and Vietnam also referred to with the common name of Chinese plum, nor with the common apricot Prunus armeniaca, which is closely related under the same section.

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