"In East Asia a favorite symbol for a maiden's early youth, because the plum blossom (Chinese mei-hua) appears even before the tree is covered with leaves. The erotic association is seen lso in the expression 'plum blossom blanket' for the coverlet on the bridal be. The five-leafed plum blossom symbolized the five gods of happiness of ancient China, as well as a specific oracle, together, the plum, Scots pine, and bamboo trees were called the 'three friends of the cold season.'
"...in northern Germany, 'when plums are ripe for Pentecost' is comparable to the English 'cold day in August.'
"The ancient Greek word for the plum (coccymelon) literally meant 'cuckoo apple.'" (Biedermann)