What to Do When the Leaves of Dragon珠 Turn Yellow
Dragon珠 is a popular choice for home greenery with its unique red and white flowers, but the issue of yellowing leaves often troubles growers. This article systematically analyzes the causes of yellow leaves through four core maintenance techniques and provides targeted solutions to help you quickly restore the vitality of the plant.
One, Light Management and Control Techniques
Analysis of the Causes of Yellow Leaves
Strong sunlight in summer causes chlorophyll to decompose, while insufficient light in winter affects the efficiency of photosynthesis. Dragon珠 needs to receive 4-6 hours of scattered light daily, and continuous strong light or shade can trigger yellowing leaves.
Scientific Lighting Plan
Use a sunshade net to filter 30% of the light from May to September, and move it to a south-facing windowsill from October to April of the following year. Regularly rotate the pot to ensure even light exposure on the leaves, and using supplementary lights can enhance winter maintenance.
Two, Golden Rules for Water Control
Warning on Watering Mistakes
Surface soil dryness can easily mislead watering judgment; in fact, it should check the moisture level 3 cm below the potting soil. Waterlogging can cause root suffocation, and drought can trigger cell dehydration, both of which can activate the yellow leaf protection mechanism.
Smart Watering Strategy
Keep a watering frequency of 3 times/week in spring and autumn, increase it to 2 times/week in summer, and complement with foliar spraying. Using the pot immersion method can ensure deep soil moisture, and using ceramic stones at the bottom can enhance drainage efficiency.
Three, Scientific Nutrition Supply Plan
Criteria for Fertilizer Selection
A balanced water-soluble fertilizer (20-20-20) is suitable for the growing period, while a high-phosphorus formula should be used before flowering. Organic fertilizers need to be fully decomposed, and the potting soil containing bone meal should be changed every spring.
Optimization of Fertilizing Cycle
Apply top dressing every 15 days from March to October and stop fertilizing in winter. During the yellow leaf recovery period, complement with chelated iron fertilizer, and use half of the regular fertilizing amount.
Four, Key Elements of Environmental Control
Points for Ventilation Management
Closed environments can breed pests such as red spiders, and the air flow rate should be maintained at 0.3-0.5m/s. Open windows in the morning and evening to create a draft, and avoid direct blows to the plants when using a circulating fan.
Through the four-dimensional maintenance system of light control, precise watering, scientific fertilization, and environmental optimization, the yellowing leaf problem of Dragon珠 can be systematically solved. It is recommended to clean the leaves monthly and check the soil pH value (maintaining 5.5-6.5) every quarter, combined with seasonal changes to dynamically adjust the maintenance plan, allowing Dragon珠 to maintain a healthy and lush state throughout the year.