Why are the leaves turning yellow?
Recently, the issue of plant care has become one of the hot topics on the Internet, especially the phenomenon of "yellowing leaves" that has attracted widespread attention. Whether it’s a home potted plant or an outdoor green plant, yellowing leaves may indicate plant health problems. This article will explain in detail the common problems of yellowing leaves from three aspects: cause analysis, solutions and preventive measures.
1. Common causes of yellowing leaves
Yellowing of leaves may be caused by many factors. The following are the five reasons that have been hotly discussed by netizens in the past 10 days:
| Cause classification | Specific performance | Proportion (discussion popularity among netizens) |
|---|---|---|
| Moisture problem | Watering too much or too little | 35% |
| nutritional deficiencies | Insufficient elements such as nitrogen, iron, and magnesium | 28% |
| Light discomfort | Exposure to the sun or prolonged darkness | 20% |
| pests and diseases | Spider mites, leaf spot, etc. | 12% |
| environmental changes | Sudden temperature changes, repotting stress | 5% |
2. Targeted solutions
Based on the above reasons, the following measures can be taken:
1.moisture management: Check the soil moisture and follow the principle of “see dry, see wet”. For potted plants, it is recommended to use the finger test method - insert 2 cm into the soil and allow it to dry before watering.
2.Nutritional supplements:
| lack of elements | Remedies |
|---|---|
| Nitrogen | Apply urea or decomposed organic fertilizer |
| iron | Spray ferrous sulfate solution (0.2%) |
| magnesium | Spray magnesium sulfate solution (1%) |
3.Lighting adjustment: Shade-loving plants (such as pothos) should avoid direct light, and sun-tolerant plants (such as roses) should ensure 4-6 hours of sunlight per day.
4.Pest and disease control: Recent common problems and countermeasures reported by netizens:
| Types of pests and diseases | Identifying features | Treatment method |
|---|---|---|
| Starscream | There are red dots and spider silk on the back of the leaves | Spray diphenylhydrazine |
| leaf spot disease | Macula with brown edges | Prune diseased leaves + spray with carbendazim |
3. Preventive measures and daily maintenance suggestions
1.Observe regularly: Establish a weekly inspection system, focusing on the differences in changes between new leaves and old leaves. Yellowing of old leaves is mostly due to normal metabolism, while yellowing of new leaves requires caution.
2.Seasonal response:
| season | Things to note |
|---|---|
| summer | Avoid watering at noon and pay attention to shade |
| winter | Reduce watering frequency to prevent cold and keep warm |
3.Scientific fertilization: Follow the principle of "fertilize thinly and apply frequently", apply diluted liquid fertilizer every 2 weeks during the growth period (spring and autumn), and stop fertilizing during the dormant period.
4.Stable environment: Sudden change of placement will cause "environmental stress-induced yellow leaves" and should be transitioned gradually (move 30 cm per day).
4. Recent hot and related topics
According to data monitoring across the entire network, high-frequency discussions related to plant care in the past 10 days also include:
- Search volume for “Succulent Summer Tips” increased by 240%
- "Remedy for Yellow Leaves in Balcony Vegetables" Douyin topic has 18 million views
- "Plant Nutrient Deficiency Map" became a hot favorite in Xiaohongshu
Through system analysis, it can be seen that although yellowing of leaves is a common phenomenon, it needs to be accurately judged based on specific performance. It is recommended that plant enthusiasts establish a maintenance log to record operations such as watering and fertilizing to facilitate traceability of problems. When yellow leaves are accompanied by large-scale leaf fall or withered branches, professional gardeners should be consulted promptly.
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