The Reasons and Solutions for the Yellowing of Zichi Niannian Leaves
As the favorite of succulent enthusiasts, Zichi Niannian often faces the common challenge of yellowing leaves. Yellow leaves not only affect the ornamental value but may also threaten the plant's health. This article will delve into the three core causes and provide actionable solutions to help you quickly save your beloved potted plants.
I. Yellowing Caused by Improper Light Management
1.1 Characteristics of Light Deficiency Yellowing
The leaves overall turn light yellow and new leaves grow longer with increased spacing. Symptoms become apparent after more than 15 days of shading, especially during the spring and autumn growing seasons.
1.2 Scientific Light Supplement Plan
Implement full-day sunlight care in spring and autumn, set up a 50% shade net in summer. In winter, use plant growth lights to ensure 4 hours of direct sunlight daily. Remember to rotate the pot weekly to ensure even light exposure.
II. Key Points of Water Control
2.1 Dry-Wet Cycle Judgment Method
Bamboo stake method: Insert a barbecue stake 2/3 into the potting soil, and after 5 minutes, pull it out to observe the moisture. Keep the soil slightly moist in spring and autumn, and completely dry before watering during the summer dormancy period.
2.2 Emergency Treatment Measures
If there is waterlogging and yellowing, immediately remove the plant from the pot and air-dry the roots, wrap the soil clump with newspaper to absorb moisture. Combined with a 75% carbendazim 1000x solution for root watering, it can effectively prevent root rot.
III. Precise Supplement of Trace Elements
3.1 Detection of Iron Deficiency
Observe the loss of green between the veins of new leaves, while the old leaves remain green, which is a typical symptom of iron deficiency. Use pH test paper to test the soil, as alkaline conditions can hinder iron absorption.
3.2 Long-Term Iron Supplement Plan
Burying rusted nails should be combined with citric acid, but it is more recommended to use chelated iron fertilizer 2000x solution, applying once a month on the leaf surface. It is suggested to combine ripe rice water to adjust the soil pH.
Through systematic analysis, it can be seen that the yellowing of Zichi Niannian leaves needs to be treated from three aspects: environmental control, water management, and nutritional supply. It is recommended to establish a care log, recording each watering and fertilizing time and plant changes, to form a personalized care plan. Regularly check the back of the leaves with a magnifying glass to catch problems early and deal with them promptly, bringing back the jade-like luster of your Zichi Niannian.