What to Do When Cymbidium Leaves Turn Yellow at the Tips
As a famous national orchid variety, the browning of Cymbidium leaf tips is a common problem in maintenance. This article analyzes the four main causes, combined with professional horticultural experience, systematically explaining the solutions for yellow leaves, helping you quickly restore the plant's healthy condition.
One: Excessive Sunlight Leading to Leaf Tip Burn
Symptom Identification Features
The leaf tips show a withered yellow color, with clear edges around the browning area, usually accompanied by dehydration curling of the leaves. New leaves are more prone to such damage in strong sunlight.
Scientific Sunlight Blocking Solution
It is recommended to use a shade net with a shading rate of 40-60%, or move it to an east-facing balcony. Ensure 2-3 hours of morning light every day, avoiding direct sunlight from 11-15 pm.
Two: Low Environmental Humidity Causing Dry Tips
Humidity Monitoring Method
Use an electronic hygrometer for real-time monitoring. The ideal humidity for Cymbidium is 60-75%. During the winter heating period, humidity is often below 40%, which requires special attention.
Humidification Skills in Detail
When using a fogging humidifier, maintain a distance of more than 1 meter from the plant. You can also place hydroponic plants in a pot, naturally increasing humidity through evaporation.
Three: Improper Water and Fertilizer Management Leading to Root Damage
Scientific Watering Schedule
Spring and autumn: 5-7 days/week, summer: 3 days/week, winter: 10-15 days/week. When using the immersion pot method, the water level should not exceed 1/3 of the pot height, and soak for 10 minutes.
Fertilizer Concentration Control
Use a 2000-fold diluted orchid-specific fertilizer during the growing period, twice a month. When fertilizer damage occurs, rinse the planting material with water three times in a row.
Four: Disease Prevention and Control Measures
Common Disease Identification
(T-J) Disease: Yellow spots with black rings; Soft Rot Disease: The leaf tips show a water-logged rot. Isolate the diseased plants in time and cut off the infected parts.
Medicine Use Specification
Alternately use carbendazim (1:800) and mancozeb (1:1000), spray once a week, for 3 consecutive weeks. After applying the medicine, strengthen ventilation.
By systematically adjusting sunlight, humidity, water and fertilizer, and disease management, combined with regular pruning and maintenance, the problem of yellowing Cymbidium leaf tips can be significantly improved within 2-3 weeks. It is recommended to clean the leaves monthly, using diluted beer to wipe the leaves, which can both remove dust and supplement trace elements.