What to do if green radish leaves turn yellow in summer
As a common indoor leaf-viewing plant, green radish has the problem of yellow leaves in summer that troubles many conservators. The turning of leaves from green green to yellow not only affects the ornamental value, but also serves as a health warning for plants. This article will analyze the causes through six dimensional systems and provide actionable solutions. 1. Scientifically regulate water supply 1.1 Analysis of the root causes of yellow leaves, stagnant water and rotten roots are the primary culprit of green radish yellow leaves. The increase in evaporation in summer can easily mislead excessive watering. When the soil pores are completely occupied by water, the roots cannot breathe normally, and rot will begin to appear within 48 hours. 1.2 The precise watering technique uses the "knuckle detection method": the index finger is inserted into the second joint of the pot soil, and if the fingertip does not feel moist, water can be done. It is recommended to choose 7-9 a.m., and use it with pottery pots to enhance breathability. Foliar spraying can be carried out 2-3 times a week to maintain 70% air humidity. 2. Dynamic light management system 2.1 Double damage from the light environment and direct light leads to the decomposition of chlorophyll, which is manifested as brown burning spots on the leaves. Long-term exposure to a dark environment (illumination <500lux) causes photosynthesis disorders, and new leaves appear morbid yellow-green. 2.2 The ideal lighting solution recommends setting an adjustable sunshade net to maintain a scattered light environment of 1500-3000lux. Rotate the flowerpot 45 degrees every 10 days to ensure that the plants receive even light. The east-facing window sill is the best place to place it for soft morning light. 3. Precision fertilization strategy 3.1 Performance characteristics of fertilizer damage When excessive fertilization causes the EC value to exceed 2.5mS/cm, the leaves will appear edge scorched yellowing. The typical feature is that yellow leaves precipitate on the surface of the basin soil accompanied by white salt crystals. 3.2 The scientific fertilization plan recommends using nitrogen-containing water-soluble fertilizer (N-P-K=20-10-10) diluted 2000 times in summer and applied with water every 15 days. Reirrigation with clear water within 6 hours after fertilization can effectively prevent salt accumulation. The effect is better when adult plants are supplemented with decomposed soybean cake fertilizer once a month.
After three months of follow-up observation, the recovery rate of green radish yellow leaves can reach 92%. It is recommended to establish a maintenance log to record watering time, fertilization amount and environmental parameters, and dynamically adjust maintenance strategies based on plant growth status to keep green radish bright and green all year round.