Why does your Euonymus japonicus have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Euonymus japonicus is sensitive to extreme fluctuations; sudden cold snaps or prolonged drought can trigger a defense mechanism where the plant sheds leaves to conserve moisture.
Overwatering or poor soil drainage leads to oxygen deprivation in the root zone, causing the roots to decay and preventing the transport of water to the foliage.
Sap-sucking pests like scale insects can weaken the plant significantly; as they drain nutrients, the plant may drop leaves to reduce transpiration surface area.
A sudden lack of essential macronutrients can cause the plant to undergo senescence in older leaves to redistribute resources to new growth.
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