Hanami (花見, "flower viewing") is the Japanese traditional custom of enjoying the transient beauty of flowers; flowers (花, hana) in this case almost always refer to those of the cherry (桜, sakura) or, less frequently, plum (梅, ume) trees. From the end of March to early May, cherry trees bloom all over Japan, and around the first of February on the island of Okinawa. The blossom forecast (桜前線, sakura-zensen) "cherry blossom front" is announced each year by the Japan Meteorological Agency, and is watched carefully by those planning hanami as the blossoms only last a week or two.