The mystery of the whitening leaves of Milan, exploring the causes and control methods.

Reasons and Control Methods for the Whitening of Daphne odora LeavesReasons for the Whitening of Daphne odora Leaves1. Insufficient lightDaphne odora is a light-loving plant. If it remains in a dark environment for a long time, the leaves will turn white due to lack of light, and uneven lighting can also cause uneven leaf color.2. Improper water managementDaphne odora requires a high amount of water, but both overly wet and dry environments can lead to white leaves. Excessive watering can cause root hypoxia, leading to white leaves; insufficient watering will cause the leaves to lose water, resulting in white leaves as well.3. Soil problemsFactors such as compacted soil, poor drainage, and unsuitable soil pH can affect the growth of Daphne odora, leading to white leaves.4. Diseases and pestsThe whitening of Daphne odora leaves may also be caused by diseases and pests, such as spider mites and aphids, which extract nutrients from the plant, causing the leaves to turn white.5. Improper application of fertilizersExcessive application of fertilizers, especially nitrogen fertilizers, can lead to excessive leaf growth in Daphne odora, resulting in white leaves.Control Methods1. Increase light appropriatelyPlace Daphne odora in a sunny location, avoiding prolonged exposure to dark environments. If lighting is insufficient, artificial light sources can be used to supplement.2. Water properlyMaintain soil moisture without making it overly wet, ensuring even watering and avoiding waterlogging.3. Improve the soilChoose well-draining and breathable soil, regularly loosen the soil to promote root growth, and adjust the soil pH by adding lime or sulfur if necessary.4. Control diseases and pestsRegularly inspect Daphne odora and take prompt action upon detecting diseases or pests. For example, use abamectin or pymetrozine to control spider mites; use dimethoate or pymetrozine to control aphids.5. Apply fertilizers rationallyApply fertilizers according to the growth stage and needs of Daphne odora. During the vigorous growth period, nitrogen fertilizers can be increased to promote leaf growth; during the flowering period, phosphorus and potassium fertilizers can be added to promote bud development.The whitening of Daphne odora leaves is the result of multiple factors. Understanding the reasons and taking corresponding control measures can help restore the vitality of the plant. Proper care and scientific management will allow Daphne odora to grow robustly under your care.References:[1] Zhang Lihua, Li Ming. Common indoor ornamental leaf plant diseases and pests and their control [J]. Plant Doctor, 2019(5): 20-22.[2] Wang XueMEI, Liu Fang. Common ornamental leaf plant maintenance skills [J]. Gardening, 2018(3): 35-37.[3] Chen Yan, Zhang Xiaohong. Diagnosis and control of common ornamental leaf plant diseases and pests [J]. Plant Doctor, 2017(6): 16-18.