What to Do When茉莉 Leaves Dry and Burn
Jasmine leaf edges turning brown and crispy is a common cultivation challenge, not only affecting its ornamental value but also indicating potential health issues for the plant. This article systematically analyzes five key treatment plans from water management to nutritional regulation, helping you quickly identify the root cause of the problem.
1. Scientific Adjustment of Water Supply
Double Danger of Water Imbalance
Observations show that 78% of cases with crispy leaves are caused by improper watering. Excess water can lead to root suffocation and rot, shown by the withering of young leaves first; while drought stress causes the edges of old leaves to turn brown and curl, both eventually disrupting water transportation.
Accurate Watering Plan
Use the bamboo skewer test: Insert a 30cm bamboo skewer into the potting soil and observe after 10 minutes. If only the tip 2cm is moist, it is necessary to water thoroughly. Use the morning and evening segment watering method in summer, and switch to a single thorough watering at noon in winter.
2. Soil Environment Optimization Strategy
Dynamic Monitoring of pH Levels
Jasmine thrives in a pH range of 6.0-6.5, test monthly with precision test strips. For alkaline soil in the north, mix in pine needle humus soil (ratio 1:3); for overly acidic soil in the south, add rice husk charcoal (5g per liter of soil).
Substrate Improvement Techniques
Prepare the golden ratio of substrate: garden soil 4 parts + decomposed leaf soil 3 parts + perlite 2 parts + bone meal 1 part. When repotting every year, retain 1/3 of the core soil to avoid root stress.
3. Key Points of Nutritional Management
Accurate Fertilization Schedule
During the growing season (April-September), use jasmine-specific fertilizer, with an N-P-K ratio of 12-8-10, applying 800 times liquid fertilizer every 10 days. During the budding stage, apply additional potassium dihydrogen phosphate (1500 times liquid) and combine with magnesium element foliar fertilizer to prevent edge browning.
Emergency Treatment for Fertilizer Burn
If fertilizer burn occurs, immediately remove the plant from the pot and wash the roots, rinse with water for 30 minutes, then soak in naphthalene acetic acid (1ppm) for 2 hours, and repot with plain soil.
4. Physiological Leaf Burn Prevention
Pruning and Shaping Principles
Retain 3-5 main branches, leaving 3 nodes on each branch. After flowering, promptly cut off the 2 pairs of leaves below the withered flowers and thin out the overlapping branches in the center. Pruning tools need to be sterilized with alcohol and the cut surfaces coated with wood ash.
Microenvironment Control
Set up a 60% shade net, maintain a day-night temperature difference of 8-10°C. Use a humidifier to maintain 55%-65% air humidity, combined with a circulating fan to enhance ventilation.
By establishing a three-dimensional care system of water-soil-nutrition and combining regular physiological regulation, it is possible to effectively reverse the leaf burn phenomenon. It is recommended to take weekly leaf comparison photos, keep a care log, and dynamically optimize the management plan.