Why does your Rhododendron niveum have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Rhododendron niveum is highly sensitive to soil saturation; excessive moisture leads to fungal pathogens attacking the root system, causing the plant to shed leaves as it fails to transport water. This is often triggered by poor drainage or heavy clay soils.
Sudden changes in temperature, particularly late spring frosts or extreme heat waves, can cause this species to enter a defensive state by dropping leaves. This is especially common if the plant was recently moved to a site with different light or wind exposure.
While they love moisture, a period of significant drought causes Rhododendron niveum to shed older leaves to conserve water for the remaining buds. The leaves will often feel dry and crisp before falling.
A lack of available nitrogen can lead to chlorosis and subsequent leaf senescence and drop. This is common in acidic-loving plants where soil pH has drifted too high, locking out essential nutrients.
Your plant might also be experiencing one of these issues:
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