白玉兰为木兰科落叶乔木,在北方4-5月份形成花芽,到翌年34月份开花,一年只开一次花,先花后叶,花朵谢后萌发新梢,随后叶片逐渐展开,5月份新梢停止生长,梢顶又形成新的花芽. 云南省农科院园艺所花??的白玉兰和朱砂玉兰,自1985年以来,每年都开二次花,第一次12月-翌年元月份开花,二月份抽出新梢,3 Magnolia Magnolia family deciduous trees, the formation of flower buds in the north from April to May, the following year 34 flowering, once a year to open the flowers, the first flowers after the leaves, flowers Xie germination of new shoots, and then gradually expand the leaves, in May the new Shoots to stop growing, the tip of the top and the formation of new flower buds .Yunnan Academy of Agricultural Horticulture gardening Magnolia and Cinnabar Magnolia, since 1985, open flowers twice a year, the first December - January the following year Flowering, taking out new shoots in February, 3