Why does your Aesculus x carnea have sudden leaf drop? Diagnose the cause and fix it with our step-by-step guide.
Larvae of this moth mine between the leaf surfaces, creating necrotic blotches that cause leaves to die prematurely and drop. This is a highly common stressor for Aesculus species during mid-to-late summer.
Red Horse Chestnuts have high transpiration rates and shallow root systems; extreme dry spells trigger an emergency physiological response to conserve moisture by shedding foliage.
Fungal pathogens thrive in humid, wet conditions, causing dark spots on leaves that eventually lead to premature senescence and leaf abscission.
Excessive soil moisture or poor drainage leads to fungal decay of the roots, impairing the tree's ability to support its large canopy, resulting in sudden defoliation.
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