Why does your Thymus vulgaris have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Pet FriendlyThyme is a Mediterranean herb that requires well-draining soil; excessive moisture suffocates the roots, leading to chlorophyll breakdown in leaves.
A lack of available nitrogen prevents the plant from producing sufficient chlorophyll, often resulting in uniform yellowing of older leaves first.
Heavy or compacted soil prevents oxygen from reaching the root zone, causing physiological stress that manifests as chlorosis (yellowing).
Water-borne fungal pathogens can attack the crown and root system of Thyme, causing leaves to turn yellow before eventually browning and dropping.
Your plant might also be experiencing one of these issues:
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