First, excessive or insufficient water and fertilizer. During the growth of flowers, if the water and fertilizer are excessive, the branches and leaves may be prolonged. Nutrients are mostly used in the roots, stems and leaves of the vegetative organs, and the flowers, fruits or seeds lack nutrients and affect flower bud formation, resulting in no flowering or flowering. The fertilization is too concentrated during the bud period, and the watering is often more or less frequent, which can easily result in falling buds. Flower growth period, if lack of water, poor plant growth, but also easy to cause less flowering, poor flower quality. Second, light, temperature is not suitable. Because of the different origins of flowers, the ecological habits vary. Some hi heat. Some are happy and some are happy; others are warm and some are cool. If the required living conditions are not met, it is easy to cause falling buds and need to be known in advance. Third, the soil contains high amounts of saline and alkaline. Most flowers like slightly acid and neutral soil, afraid of salt and alkali. Salt-tolerant flowers, such as geranium, Chinese rose, etc., have a salt content of more than 0.1% in soil and a pH value of more than 7.5, which also affects fertility and flowering. Fourth, the growth period is not pruning. Flowers and trees are not pruned during the growing period, which not only affects the appearance, but also consumes a lot of nutrients, affecting the formation of flower buds, causing no flowering or flowering. 5. The room temperature is too high in winter. If the room temperature is too high, it will affect the dormancy of the flower trees or make them germinate prematurely, pumping leaves, consume nutrients, and will grow weaker in the following year, without flowering or with small or withered flowers. Six, affected by pests and diseases. Flower growth period, susceptible to pests and diseases, affect the accumulation of nutrients, growth blocked, resulting in falling buds. For the above reasons, reasonable watering and fertilizing, regulating the growth environment of potted plants, reasonable pruning, and prevention and control of pests and diseases can solve the problem of flowering without flowering, falling flowers and falling buds.