What to Do When茉莉 Leaves Turn Yellow
Jasmine, as a classic ornamental flower, often faces the problem of yellowing leaves. This article systematically analyzes the causes of yellowing leaves and corresponding solutions to help gardening enthusiasts quickly diagnose issues and restore the plant's healthy state.
I. Scientific Water Management
1.1 Analysis of Waterlogging Yellow Leaves
Roots that are soaked in a moist substrate for an extended period can cause respiratory difficulties, with older leaves first showing interveinal yellowing. Data shows that 70% of potted jasmine death cases are directly related to improper watering.
1.2 Precise Watering Plan
Adopt the "dry-wet" principle, maintaining a 2-3 day watering interval in spring and summer, and extending it to 5-7 days in winter. It is recommended to use the bamboo stake test: insert it into the soil and observe the moisture trace after 2 hours.
II. Optimization Strategies for Nutrient Management
2.1 Diagnostic Criteria for Fertilizer Burn
New leaves with burned edges and falling old leaves are typical signs of fertilizer damage. Unripe organic fertilizer can produce ammonia that burns roots, while excessive chemical fertilizer leads to high EC values.
2.2 Scientific Fertilization Techniques
Apply a 1:1000 diluted sulfate fertilizer solution monthly during the growing season, and add phosphorus and potassium fertilizers after flowering. It is recommended to use slow-release fertilizer granules, which provide nutrients for 3-6 months.
III. Soil Environment Improvement Plan
3.1 Detection of Acid-Base Imbalance
When leaves show net-like yellowing (veins green and leaf flesh yellow), it is necessary to test the soil pH. The optimal pH range for jasmine growth is 5.5-6.5.
3.2 Practical Acid Adjustment
Water with a 1000-fold dilution of ferrous sulfate solution once a month, or add pine needle soil for improvement. In areas with alkaline water, it is recommended to collect rainwater for watering.
By systematically adjusting the three elements of water, nutrients, and acid-base, combined with regular pruning of diseased and weak branches (retaining 5-7 healthy leaves), new leaves usually turn green within 2-3 weeks. It is recommended to test soil indicators every quarter and establish a maintenance log to record plant changes.