Reasons and Solutions for Yellow Leaves on Peace Trees
Peace trees, as common household green plants, yellowing leaves are the most troublesome issues in maintenance. Yellow leaves not only affect the ornamental value but may also indicate a health crisis of the plant. This article will deeply analyze the causes of yellowing leaves from the dimensions of water management, nutrient deficiency, and environmental regulation, and provide operable solutions.
Yellow Leaves Caused by Water Imbalance
Double Impact of Waterlogging and Drought
Persistent waterlogging can cause root hypoxia and rot, initially表现为 tender leaves turning yellow and wilting. Using ceramic pots or containers with drainage holes at the bottom can help pour off accumulated water in the saucer 30 minutes after watering. When the top 2cm of soil turns white and dry, using the immersion pot method to water the plant is more beneficial for even root absorption.
Scientific Watering Techniques
In spring and autumn, maintain a watering frequency of 3-5 days/week. In summer, check the soil temperature in the morning and evening to avoid watering during the noon high temperature period. In winter, use room temperature water and extend the frequency to 7-10 days/week, combined with the bamboo stake insertion method to accurately detect soil moisture.
Prevention and Treatment of Iron-Deficiency Chlorosis
Features of Iron Deficiency
Net-like yellow spots first appear between the veins of new leaves, gradually spreading to the entire leaf. In alkaline soil areas in the north, the incidence rate can reach 65%. Use pH test strips to check soil acidity and alkalinity, and intervene immediately when the pH value is greater than 7.5.
Nutritional Supplement Plan
Blend ferrous sulfate (0.2% concentration) with citric acid in a 1000:1 ratio and spray on the leaves every 15 days. Combined with applying mature rice washing water to the roots, this can effectively improve the absorption rate of iron, ensuring it is not mixed with alkaline fertilizers.
Key Points for Light and Temperature Environment Regulation
Light Intensity Management
In summer, 50%-60% of direct sunlight should be blocked, and when using shade nets, maintain a ventilation distance of more than 2 meters. In winter, the plant can receive full sunlight but needs to be rotated 180 degrees regularly to ensure even exposure.
Temperature Critical Control
Establish a three-level protection system: start using insulation film coverage at 10°C, use heating pads at 5°C, and move the plant indoors at 0°C. Keep the day-night temperature difference within 8°C to avoid leaf edge scorching.
Critical Measures for Soil Improvement
Change the acidic matrix containing vermiculite and pine needle soil every 2 years, and regularly apply sulfur powder (5g/m²) to adjust the pH. For compacted soil, use the bamboo stake sand injection method to improve aeration and combine with earthworm dung to enhance aggregate structure.
Through systematic diagnosis and targeted treatment, combined with monthly leaf cleaning and quarterly panoramic checks as preventive measures, peace trees can maintain a healthy, lush green state. It is recommended to establish a maintenance log to record temperature and humidity changes and the plant's responses, gradually forming a personalized care plan.