Does Jasmine lose its leaves in winter?
The white and fragrant jasmine is a typical southern flower, and its winter leaves often confuse northern flower friends. As a temperature-sensitive plant, the winter maintenance of jasmine requires special attention. This article will deeply analyze the principle of falling leaves and provide systematic overwintering management plans. The core mechanism of Jasmine leaf loss in winter is temperature-triggered physiological response When the environmental temperature continues to fall below 10℃, Jasmine activates its self-protection mechanism. Leaf cell fluid begins to crystallize, reducing water evaporation and nutrient consumption by actively shedding leaves. This natural physiological phenomenon is like animal hibernation and is an important strategy for plants to cope with low temperatures. Growth characteristics of the dormant period Jasmine enters a semi-dormant state in winter, which is characterized by the gradual yellowing and shedding of old leaves, the cessation of germination of new buds, and the decline of root absorption capacity. At this time, the metabolic rate of the plant is reduced by 60%-70%, and the completely deciduous Jasmine is more likely to survive the winter safely than the plants with some leaves retained. The precise water control technology for the three major elements of jasmine overwintering management adopts the "three-look watering method": look at the soil surface (cracked and cracked 3cm), look at the leaves (slightly curled), and look at the weather (continuous sunny days). It is recommended to use a long-spout pot to slowly inject water along the basin wall to maintain the soil water content at about 30% to avoid the formation of frozen soil. The gradient temperature control plan establishes three levels of temperature protection: basic activity is maintained above 5℃, anti-freezing measures (bagging insulation) are activated at 0-5℃, and temperatures below-5℃ must be moved indoors. Pay special attention to avoid the temperature difference between day and night exceeding 15℃, and use foam boxes to buffer temperature fluctuations. Scientific strategy of stopping fertilizer. Complete the last fertilization before the end of October, and use phosphorus and potassium fertilizers to enhance cold resistance. In winter, root fertilization is completely stopped, and 0.1% potassium dihydrogen phosphate solution can be sprayed on the leaves every month to enhance the strength of the cell wall. Jasmine overwintering extended maintenance techniques supplement light for no less than 4 hours a day. Using plant fill light can improve the success rate of overwintering. Regularly rotate the flowerpot to ensure uniform light exposure, combine with light pruning to remove thin and weak branches, and retain the main branch length of 15-20cm. Gradually increase the watering amount after spring warms up, and resume routine maintenance after new buds sprout.
By understanding the winter physiological characteristics of jasmine and adopting scientific conservation measures, it can not only help plants survive the winter safely, but also promote an increase in flower production by more than 30% in the coming year. It is recommended to formulate a personalized maintenance calendar based on the local climate characteristics so that the jasmine blooms with fragrance every year.