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桂花喜强光,好温暖,忌积水,怕煤烟。桂花不开花,大致是由以下六种原因造成的:1.阳台过于荫蔽。桂花喜阳光,稍耐阴,属长日照植物,但阳台如过于荫蔽,每日光照在10小时以下,光线不足时,导致枝叶徒长,影响花芽的形成,当然也就开不了花。2.施肥不当。如长期施用氮肥,会使枝叶徒长,影响开花。桂花是香花,喜含磷、钾多的肥料,换盆时,最好用充分发酵的猪粪作基肥,开花前,要多施几次含磷、钾多的追肥液。3.浇水过多。浇水过量或连阴雨天盆内积水,均易烂根、落叶,影响开花。即使不烂根,也会使枝叶徒长而不开花。桂花浇水要掌握“二少一多”的原则,即新梢发生前要少浇,阴天要少浇;夏秋炎热干旱要多浇。换盆后,经常保持50%的含水量,酷暑天保持60%的含水
Sweet-scented osmanthus light, so warm, avoid water, afraid of soot. Osmanthus is not flowering, generally caused by the following six reasons: 1. The balcony is too shady. Osmanthus hi sun, slightly shade, is a long sunshine plants, but if the balcony is too shady, the daily light in less than 10 hours, when light is poor, leading to foliage growth, affecting the formation of flower buds, of course, can not open the flowers. 2. Improper fertilization. If the long-term use of nitrogen fertilizer, will make leaves and legs grow long, affecting flowering. Sweet-scented osmanthus is a fragrant flower, hi phosphorus, potassium and more fertilizer, when changing basins, it is best to use fully pig manure as basal fertilizer, before flowering, to apply more phosphorus, potassium and more dressing fluid. 3. Too much water. Excessive watering or rainy days basin water, are easy to rot roots, leaves, affecting flowering. Even if not rotten root, it will make the branches and leaves grow without flowering. Osmanthus watering to master “two less than one more ” principle, that is, less shoot before the emergence of new shoots, cloudy to less pouring; summer hot and dry to pour more. After changing basins, often maintain a 50% moisture content, summer days to maintain 60% water