Yellow Leaves in Hydrangea
Hydrangeas produce spectacular large flower heads in pink, blue, purple, or white
Hydrangea care requirements
These care conditions are most relevant to yellow leaves in Hydrangea. Check each one as a potential cause.
Symptoms to look for in Hydrangea
Yellowing between the leaf veins while veins stay green, or general yellowing on older leaves if a different cause.
Common causes in Hydrangea
Yellowing between green veins usually signals iron chlorosis from soil that's too alkaline for the plant to absorb iron properly, while general yellowing often points to insufficient feeding.
How to diagnose yellow leaves in Hydrangea
Check soil moisture first. Wet soil + yellow lower leaves = overwatering. Dry soil = underwatering. Yellowing between veins = nutrient deficiency.
How to treat yellow leaves in Hydrangea
Test soil pH and apply chelated iron if alkaline soil is the cause, or resume balanced feeding in spring if general yellowing suggests a nutrient deficiency.
Preventing yellow leaves in Hydrangea
Maintain slightly acidic, humus-rich soil, and feed with a balanced slow-release fertiliser in spring.