When exposed to high temperatures, Cyclamens stop blooming. Their leaves are turning yellow. The plant goes into a dormant state. The pot with the tuber can be removed from the windowsill before growth begins in the autumn.
Exposure to high temperatures (above 18-20°C) stresses cyclamen, leading to a halt in flowering, slower development, and even the death of flower buds. To stimulate flowering, cyclamen requires cool temperatures (16-18°C during the day and 2-3 degrees cooler at night), bright, filtered light, and moderate humidity.
Signs of negative effects of high temperatures
Cessation of flowering: The plant stops forming buds, even if they are already present.
Wilting: Leaves and flowers begin to yellow and wilt before they have time to open.
Slowed growth: The overall development of the cyclamen slows, and the tuber may go dormant.
How to help cyclamen when overheated
Reduce the temperature: Move the plant to a cool location where the temperature does not exceed 18°C.
Provide filtered light: Avoid placing cyclamen in direct sunlight, which can cause burns.
Maintain humidity: Dry air exacerbates heat stress. You can place the pot on a tray with damp expanded clay or mist the air around the plant.
Avoid drafts: Sudden temperature changes and drafts also negatively affect flowering.
Prevention
The right location: Place the cyclamen in an east- or west-facing window with sufficient bright but indirect light.
Regular watering: Keep the soil slightly moist, avoiding drying out or stagnant water.
Careful observation: Inspect the plant regularly to spot signs of stress and take appropriate action.
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