Why does your Salix alba have drooping leaves? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlySalix alba is a riparian species with high transpiration rates; insufficient soil moisture leads to loss of turgor pressure in the leaves. When the roots cannot meet the evaporative demand, the willow will rapidly wilt and droop.
While willows love water, prolonged saturation of heavy clay soils can lead to anaerobic conditions and fungal pathogens like Phytophthora. This destroys the root system's ability to transport water, resulting in symptoms that mimic drought.
During intense summer heat waves, Salix alba may close its stomata to conserve water, causing the leaves to lose rigidity and droop. This is often a temporary physiological response to prevent desiccation.
A lack of available nitrogen can weaken the structural integrity of the foliage and reduce chlorophyll production. This often manifests as a general loss of vigor and a drooping, pale appearance in new growth.
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