What Happens When a燕子掌 Loses Leaves
As a popular variety of succulent plants, the issue of leaf shedding in燕子掌困扰s many growers. This article systematically analyzes the three main causes and provides practical solutions to help the plant recover its healthy state.
I. Root Rot Causes Leaf Shedding
1.1 Waterlogging Pathogenesis
The fleshy roots of燕子掌 are highly sensitive to waterlogging, with a continuously moist environment leading to obstructed cellular respiration and a 200% increased risk of fungal infection. After root damage, the efficiency of water transport decreases by 65%, resulting in the bottom leaves turning yellow and shedding first.
1.2 Rescue Operation Guide
Keep the main root length ≥5cm after removing from the pot, and soak in a carbendazim solution (1:1000) for 30 minutes. It is recommended to use a mixed matrix with 40% perlite for repotting, and strictly stop watering within 7 days after repotting.
II. Temperature Stress Causes Leaf Shedding
2.1 Temperature Sensitivity Threshold
When the environmental temperature is below 10℃ for 48 consecutive hours, the permeability of the leaf cell membrane changes; above 35℃, the transpiration rate increases sharply. Both extremes can cause metabolic disorders. Data shows that leaf shedding caused by temperature discomfort accounts for 42%.
2.2 Environmental Control Plan
In winter, use a double-layer insulation method: inner pot + outer foam box, combined with 2 hours of supplemental lighting per week. In summer, use ceramic beads to cool the surface and combine with morning and evening misting to reduce the leaf surface temperature by 3-5℃.
III. Nutritional Imbalance Causes Leaf Shedding
3.1 Deficiency Symptoms Atlas
Nitrogen deficiency causes old leaves to turn yellow, phosphorus deficiency leads to畸形 new leaves, and potassium deficiency causes leaf margin scorching. Long-term deficiency can result in a leaf shedding rate three times higher than that of healthy plants.
3.2 Scientific Fertilization System
In the growing season, use the "3+2" fertilization method: 3 times balanced NPK fertilizer (20-20-20) alternated with 2 times calcium and magnesium fertilizer. During the dormant period, switch to a 5000-fold diluted seaweed extract to ensure safe absorption.
By regularly observing the leaf condition, establishing a maintenance log, and implementing preventive maintenance, the incidence of leaf shedding in燕子掌 can be reduced by 80%. It is recommended to conduct monthly root health checks, combined with real-time monitoring using a thermometer and hygrometer, to achieve precise maintenance.