Why does your Euphorbia bergeriana have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Euphorbia bergeriana is a tropical species that is highly sensitive to sudden temperature drops. Exposure to cold drafts from windows or air conditioning units can trigger an immediate physiological stress response, causing the plant to shed leaves to conserve energy.
Both overwatering leading to root rot and extreme drought can cause sudden leaf drop in Candleplants. If the substrate stays saturated, oxygen deprivation kills fine roots; if too dry, the plant sheds leaves to reduce transpiration.
A sudden change in light levels, such as moving the plant from a shaded area to direct midday sun, can cause leaf scorch and subsequent drop. Conversely, insufficient light for this species may lead to a gradual but rapid shedding of lower leaves.
Sap-sucking insects like scale or mealybugs can weaken the Euphorbia by draining nutrients and injecting toxins. This physiological stress often manifests as a sudden loss of foliage as the plant's vascular system is compromised.
Your plant might also be experiencing one of these issues:
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