What Is Ume? The Japanese Plum Blossom The Japanese plum — ume, also called mume plum or Japanese apricot — is known by this name in Japan, while in China it is called meihua. Ume begins to bloom while the weather is still cold, from early February until the end of March. It is a small, elegant tree with bright pink flowers and a yellow center that produces small green fruits by early June. The fruits of ume are almost never eaten raw because of their intensely sour taste, ho