Edema / Bumps on Leaves
Edema appears as raised bumps, blisters, or corky growths on leaves. It occurs when the plant absorbs water faster than it can transpire.
可能原因
Overwatering with Low Transpiration
Why: When the plant takes up more water than it can release through its leaves, cells swell and burst.
Signs to check: Raised, blister-like bumps on leaf undersides, bumps may turn brown and corky over time.
High Humidity with Cool Temperatures
Why: Cool, humid conditions reduce transpiration while roots continue absorbing water.
Signs to check: Bumps appear during cool, overcast periods, primarily on newer leaves.
Inconsistent Environmental Conditions
Why: Fluctuating conditions between warm/dry and cool/humid can trigger edema.
Signs to check: Damage appears sporadically, corresponds with weather or seasonal changes.
检查要点
- 1Check if bumps are on the undersides of leaves (characteristic of edema)
- 2Review watering frequency relative to light and temperature
- 3Assess humidity levels and air circulation
- 4Rule out pests — edema bumps are part of the leaf tissue, not removable
处理方法
- Reduce watering frequency and allow soil to dry more between waterings
- Improve air circulation around the plant
- Increase light exposure to boost transpiration
- Avoid misting the plant excessively
何时寻求帮助
- Bumps are accompanied by yellowing and leaf drop
- Bumps are easily removed or contain insects (likely a pest, not edema)
关键要点
Edema is a physiological condition, not a disease. It resolves when the balance between water uptake and transpiration is corrected.
在应用中跟踪恢复
记录进度，设置提醒，获取AI诊断。
来源: NC State Extension, University of Florida IFAS Extension. 内容根据公开可用的园艺参考资料编写，仅供教育用途。列出来源组织仅为透明度考虑，并不意味着认可。