Why does your Rhododendron decorum have drooping leaves? Diagnose the cause and fix it with our step-by-step guide.
Rhododendrons have shallow, fibrous root systems that are highly susceptible to drying out. When the substrate loses moisture, the plant loses turgor pressure, leading to characteristic leaf wilting.
Excessive moisture or poorly draining soil leads to oxygen deprivation in the rhizosphere, causing fungal pathogens like Phytophthora to attack the roots. This prevents the plant from transporting water upward, resulting in drooping despite wet soil.
High ambient temperatures increase transpiration rates beyond the root system's ability to supply water. Rhododendron decorum prefers cooler, shaded environments; sudden heatwaves cause rapid leaf drooping.
If the root flare of the Rhododendron decorum was buried too deep during planting, the stem can begin to decay. This physical damage restricts the vascular flow of nutrients and water to the foliage.
Your plant might also be experiencing one of these issues:
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