Why does your Rheum undulatum have drooping leaves? Diagnose the cause and fix it with our step-by-step guide.
As a species that prefers consistent moisture, Curly Rhubarb lacks significant water storage. When soil dries out too much, the turgor pressure in its large, wavy leaves drops rapidly, causing visible wilting.
Excessive water in heavy soils leads to fungal decay of the rhizome and roots. This prevents the plant from transporting water to the large leaf surface area, resulting in leaves that appear limp despite wet soil.
The large surface area of Rheum undulatum leaves promotes high transpiration rates. During extreme heat waves, the plant may droop to reduce surface exposure and conserve internal moisture.
A lack of available nitrogen interferes with chlorophyll production and structural cell strength. This can cause older, larger leaves to lose vigor and sag under their own weight.
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