The cultivated soil is poor or the pot soil has not been changed for a long time, which is poor in fertility and nutrition, especially the content of phosphorus is too little, which restrains the normal differentiation of flower bud and thus affects the normal flowering.
The cultivation environment is located in the shade with poor ventilation and insufficient light, which restrains the germination of flower bud.
The pruning work is not done in place, the branches are too dense, and the nutrients are scattered, so that the flower buds lack the nutrients needed for growth.
The high temperature in midsummer makes the soil temperature rise to more than 30 ℃, which inhibits the normal physiological function of root system. High temperature is also easy to cause water shortage, making the soil layer at the root become dry and hot, which is easy to cause the wilting of branches and leaves and the scorch of leaf edge, which is unfavorable to flowering in autumn. Therefore, in summer, the water must be sufficient to cover the basin soil properly. Small corncobs and short plant stalks can be used. When watering, the cover should be removed as far as possible to make the water directly contact the basin soil, so as to reduce the soil temperature and control the water evaporation.
It is difficult to predict the temperature in the early spring in the north, and the freezing injury often occurs. This period is the sprouting of axillary buds, the differentiation of flower buds and the growth period of new shoots. Therefore, the freezing injury caused by late frost and cold current must be avoided, otherwise the growth of flower buds will be blocked, and it is difficult to conceive buds and bloom. New shoots wilt after freezing, which will reduce the initial flowering rate. To sum up, we need to take timely and effective protective measures against frost damage.
The final reason may be that the plant is infected by the disease and can not be effectively controlled in time, resulting in death and natural failure to bloom.
Ma Liang's brilliant writing is based on the myth of fantasy, but we can only rely on the dedicated broadcast. Flower friends, in order to prevent the "no flower tragedy" from happening, please sprinkle the "water and fertilizer" in your hands diligently!
