Leaf Scorch / Water Stress
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About this condition
Leaf scorch is heat and light damage caused by strong direct sunlight, while water stress results from insufficient moisture supply leading to wilting and tissue necrosis. Both are common physiological disorders in summer bonsai management, and small containers dry out especially quickly.
Common symptoms
- Leaf margins and tips turn brown and dry out
- Areas of foliage exposed to intense light bleach to white or tan
- New shoots and young leaves wilt and droop
- Soil is very dry and the pot feels noticeably light when lifted
Common causes
- Prolonged exposure to direct sunlight or intense western afternoon sun in summer
- Watering intervals too long, allowing soil to dry out completely
- Excessive transpiration from hot, dry winds during high temperatures
- Small containers with limited water-holding capacity drying out very quickly
Prevention (growing conditions & routine care)
In summer, allow only morning sun and move trees to partial shade or under shade cloth from midday. Small containers may require watering once or twice daily. Avoid positions exposed to hot, drying winds.
Related guide
→ Browse the species guide for this animalWhen to see a vet
Monitor; consult a specialist if it worsensWhat can a nursery or grower do?
Specialist bonsai nurseries and growers can advise on appropriate summer placement, watering frequency, and shading strategies specific to the tree species.
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Other problems with this plant
Root RotConsider acting within a few daysPowdery MildewMonitor; consult a specialist if it worsensSooty MoldConsider acting within a few daysAphidsMonitor; consult a specialist if it worsensScale InsectsConsider acting within a few daysSpider MitesMonitor; consult a specialist if it worsensBorer (Longhorn Beetle Larva)Act promptly (isolate, remove the cause)