What to Do When the Leaves of麒麟掌 Turn Yellow
As a succulent plant with high ornamental value, 麒麟掌 is favored by horticulture enthusiasts for its unique shape. However, many plant lovers often encounter the problem of yellowing leaves during maintenance, which not only affects the ornamental value but may also indicate health issues in the plant. This article will systematically analyze the causes of yellow leaves from environmental control to daily maintenance and provide solutions.
Ⅰ. The Impact of Environmental Factors on the Yellowing of 麒麟掌 Leaves
1. Misunderstanding of Temperature Control
The optimal growth temperature for 麒麟掌 is 18-28°C. When the environmental temperature is below 12°C, metabolic disorders occur, leading to dried leaf edges. It is recommended to move the plant indoors before the first frost, using a double-glazed window plus supplemental lighting to maintain a temperature above 15°C for overwintering. In summer, when the temperature exceeds 35°C, it is necessary to provide shade to avoid root rot caused by high temperature and humidity.
2. Techniques for Monitoring Light Intensity
Ensure 4-6 hours of scattered light daily, which can be measured with a professional illuminance meter (maintaining 3000-5000 lux). Full sun can be provided in spring and autumn, while a 50% shade net should be used in summer, and the plant should be placed near a south-facing window in winter. Long-term lack of light can lead to the breakdown of chlorophyll, resulting in complete yellowing of the leaves.
Ⅱ. Key Points for Daily Maintenance
1. Scientific Watering Methodology
Use the "wet-dry alternation" method: water thoroughly after the potting soil is completely dry (using the bamboo stake test), with an interval of 10-15 days in summer and extended to 20-25 days in winter. Pay special attention to using slightly acidic water (pH 6.0-6.5), which can be achieved by letting tap water sit for 3 days and then adding a small amount of white vinegar.
2. Precise Fertilizing Guide
In the growing season (March-September), apply a slow-release fertilizer for succulents once a month (N-P-K=5-10-10), combined with foliar application of 0.1% ferrous sulfate. Remember to apply thin layers of fertilizer frequently and ensure good ventilation within 24 hours after fertilizing. During the dormant period in winter, fertilization should be completely stopped.
Ⅲ. Advanced Maintenance Tips
It is recommended to repot every 2 years in spring, using a mixed matrix of volcanic rock, vermiculite, and decomposed leaf soil (4:3:3). Regularly check the junction of the roots and stems, and if scale insects are found, they can be physically removed with a 75% alcohol cotton swab. For leaves that have already turned yellow, they should be pruned promptly and the cut surfaces disinfected with carbendazim.
By establishing a three-dimensional maintenance model of temperature, light, and water, combined with regular observation logs, the yellowing problem of 麒麟掌 leaves can be effectively prevented. It is recommended that plant lovers take growth comparison photos monthly, adjust maintenance strategies in a timely manner, and keep their 麒麟掌 always shining like jade.