Aphids
🔎 依症狀查找
關於這種疾病
Aphids are small sap-sucking insects that cluster on tender new growth and leaf undersides. They are common on bonsai from spring through autumn; left unchecked, they can weaken the tree and trigger sooty mold.
主要症狀
- Clusters of green, black, or brown insects appear on new shoots and leaf undersides
- Leaves and stems become sticky from honeydew deposits
- Leaves curl and turn yellow
- Ants may be frequently observed on the tree
主要原因
- Rising temperatures from spring onward activating aphid reproduction
- Poor air circulation allowing colonies to establish
- Excess nitrogen fertilization producing tender, pest-attractive new growth
- Absence of natural predators such as ladybugs in the surrounding environment
預防（栽培環境與日常管理）
Position trees with good air circulation and inspect new growth regularly for early detection. Avoid excess nitrogen fertilization. Be alert to increased ant activity on the tree, which often indicates aphid presence.
相關圖鑑
→ 查看該動物的品種圖鑑就醫建議
觀察情況，若惡化請諮詢專賣店專賣店·園藝可做的處理？
Specialist bonsai nurseries and growers can advise on management options appropriate to the severity of infestation and on environmental adjustments to prevent recurrence.
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