What causes plum blossoms to lose their leaves?
As the first of the top ten famous flowers in China, plum blossoms are deeply loved for their arrogant character. However, falling leaves often occur during the maintenance process, which not only affects the ornamental value, but also serves as a health warning for the plants. This paper focuses on the problem of plum leaf falling and combines professional maintenance experience to analyze the three key causes and provide solutions. 1. Mechanism of high temperature stress caused by temperature abnormalities in plum blossoms. The optimal growth temperature for plum blossoms is between 15-25℃. When the environmental temperature continues to exceed 30℃, plant transpiration is intensified, root absorption function is blocked, resulting in leaf water imbalance. This heat stress reaction can cause leaf yellowing and shedding, especially when indoor heating is too strong in northern China in summer. The scientific cooling plan recommends adopting a three-layer protection strategy: 1) build a sunshade net to block strong light;2) spray the leaves in the morning and evening to cool down;3) lay a ceramite heat insulation layer on the bottom of the basin. At the same time, keep the environment ventilated and avoid direct air conditioning. 2. Improper light management causes light demand for fallen leaves. Characteristics of Plum blossoms are light-scattering plants, and the average daily light is 3-5 hours. Full sunshine can be accepted in spring and winter, but special attention should be paid in summer. Strong ultraviolet rays can cause damage to the chloroplast structure, sunburn spots and accompanied by fallen leaves. Light adjustment tips recommend using a sun screen that can adjust the shading rate (50%-70% shading rate is recommended), or moving the plants to an east-facing balcony. Cooperate with the basin device rotating 1/4 turn every week to ensure uniform light reception. 3. Water imbalance causes falling leaves crisis. Technical points for watering plum blossoms are drought-tolerant and waterlogging, and they need to master the principle of "seeing dry, seeing wet". Water thoroughly every 5-7 days in spring and autumn, every 3 days in summer (avoid noon), and every 15 days in winter. Use the bamboo stick test method: insert 2/3 of the pot soil, pull it out and water it if there is no moisture. It is recommended to adopt a double basin design for drainage system optimization: a 3cm gap should be left between the outer water storage basin and the inner planting basin. The substrate formula is prepared in a ratio of garden soil, coarse river sand and legumes soil of 4:3:3 to ensure that the water permeability coefficient is greater than 0.5 cm/s.
By accurately controlling the three core elements of temperature, light and moisture, the problem of plum blossoms falling leaves can be effectively solved. It is recommended to use foliar microscopic examination to observe the status of pores every month and adjust the maintenance plan in time. By mastering these key technologies, plum blossoms can always maintain a vigorous and upright posture and bloom with a more brilliant brilliance of life.