Why does your Rhododendron hirsutum have drooping leaves? Diagnose the cause and fix it with our step-by-step guide.
Excessive moisture or poor drainage in the acidic soil leads to fungal pathogens attacking the root system of Rhododendron hirsutum. This prevents the plant from transporting water to the foliage, causing systemic wilting.
As an alpine species, while hardy, extreme dehydration causes the plant to lose turgor pressure in its leaves. This results in a characteristic drooping or curling of the leaf margins as a survival mechanism.
High temperatures or sudden heat waves can cause transpiration rates to exceed the root's ability to uptake water. This leads to temporary wilting during the hottest part of the day.
If the soil pH rises above 5.5, Rhododendron hirsutum cannot absorb essential iron. While primarily causing yellowing, severe deficiency can weaken the plant enough to cause structural drooping.
Your plant might also be experiencing one of these issues:
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