Uncovering the reasons for gardenia and jasmine yellow leaves
Gardenia and jasmine are classic aromatic plants, and their yellow leaf problems often trouble their conservators. This paper compares and analyzes the causes of yellow leaves of the two plants, provides scientific treatment plans to help you achieve the maintenance goal of green throughout the year. Gardenia yellow leaf control system Soil acid-base imbalance syndrome Gardenia root system is extremely sensitive to pH values. When soil pH>7, the absorption of iron is blocked, which shows yellowing between new veins and growth stagnation. It is recommended to use pH test paper every month and adjust with ferrous sulfate solution (1:1000). The three principles of water and fertilizer management follow the watering method of "seeing dry, seeing wet", and maintain the substrate humidity of 40%-60% in spring and autumn. Guidelines for frequent application of thin fertilizer: Use decomposed cake fertilizer water (diluted 20 times) and potassium dihydrogen phosphate solution (800 times solution) alternately every 10 days during the growth period. The root environment optimization plan recommends changing the pots every spring. The substrate formula is peat soil: pine needle soil: perlite =5:3:2. A 3cm ceramite drainage layer needs to be set up on the bottom of the basin to prevent stagnant water and root rot. Reveal the causes of gardenia and jasmine yellow leaves. Dynamic balance of water and fertilizer in the Jasmine yellow leaf treatment system. During the summer high temperature period, the "morning and dusk double watering method" is implemented: watering thoroughly in the morning and replenishing 30% in the evening. Fertilization adopts the "three-stage method": add bone meal during the bud bud pregnancy period, add boron fertilizer during the full flowering period, and stop fertilizer and control water during the dormant period. The key points of micro-environment control are to maintain the temperature difference between day and night of 8-10℃ and the air humidity of 60%-70%. In winter, the "pot insulation method" is adopted: the outer flowerpot is filled with wood chips, and the inner flowerpot is placed in the cultivation pot, which can increase the root temperature by 3-5℃. The Four Steps of Soil Activation Implement soil activation every season: ① loosen the soil to a depth of 15cm ② embed decomposed coffee grounds (5% of the pot soil) ③ Irrigation EM bacterial solution (diluted 500 times) ④ Cover the surface with pine scales. This method can increase the soil organic matter content by 30%.
By accurately controlling the soil environment, establishing a scientific water and fertilizer system, and optimizing the plant microclimate, gardenia jasmine leaves can be dark green throughout the year. It is recommended to combine plant growth monitors to grasp key parameters such as EC value and pH value in real time to make maintenance decisions more scientific and accurate.