
Excessive sun
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Pathogen:
Type:
Environmental stress
Risk:
CRÍTICO

Plantas decorativas de jardín y/o interior
Estrés ambiental

WHO CAUSES IT?
Excessive sunlight causes stress in plants, directly affecting their tissues, especially when exposure is very intense or prolonged. Although light is necessary for photosynthesis, too much solar radiation—particularly during peak hours—can damage leaves, causing dehydration and burns. This problem is common in plants not adapted to direct sunlight, in recently transplanted plants, or when there is a sudden change of location (for example, from indoors to outdoors). It is also exacerbated by high temperatures and low humidity.
SYMPTOMS
Excessive sunlight usually affects the most exposed parts of the plant first, such as the upper, sun-facing leaves.
Typical symptoms:
• Dry or whitish spots on the leaves (sunburn).
• Dry edges or a "burned" appearance.
• Discolored leaves or leaves with a loss of green intensity.
• Dry or brittle texture.
• Wilting during the hottest hours of the day.
• In severe cases, leaf drop.
This is direct tissue damage, not a disease, and can appear rapidly.
Stages of development:
• Initial: slight discoloration or light spots.
• Intermediate stage: appearance of dry or burned areas.
• Advanced stage: damaged leaves and tissue loss.
• Final stage: leaf drop and general weakening.



TEMPERATURE AND HUMIDITY
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TRANSMISSION ROUTES
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Do you want to remove this disease? Choose how you want to treat it.
TREATMENTS
Chemical treatments
There are no phytosanitary treatments. Sun exposure should be adjusted and the plant protected from excessive radiation.
Authorized treatments in organic farming
There are no phytosanitary treatments. Sun exposure should be adjusted and the plant protected from excessive radiation.
Biological control
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Recommendations
To prevent damage from excessive sun, it's crucial to adjust the plant's exposure to its needs.
• Avoid direct sunlight during peak hours (midday and early afternoon).
• Gradually acclimate the plant if moving from shade to sun.
• Use shade or place it in areas with filtered light.
• Increase watering frequency during hot weather (without waterlogging).
• Maintain good ambient humidity if possible.
• Protect sensitive or recently transplanted plants.
• Choose suitable locations based on the species.
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*Recommended treatments are still recommendations according to authority databases and in no way replace the guidelines established according to the legislation of each country.
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TREATMENTS
Homemade remedies
There are no home treatments
Natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMENDATIONS
REPELLENT PLANTS


















