Why does your Hydrangea macrophylla Magical Amore have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
In Hydrangeas, yellowing between the veins (interveinal chlorosis) while veins remain green is a classic sign of iron deficiency. This occurs most frequently in alkaline soils where high pH prevents the 'Magical Amore' cultivar from absorbing iron.
Hydrangeas have high transpiration rates but are highly susceptible to root rot if soil does not drain well. Excess moisture deprives roots of oxygen, causing the leaves to turn a pale, uniform yellow before dropping.
A lack of nitrogen causes the entire leaf to turn a pale yellow, starting from the older, bottom leaves first. This is common in heavy-feeding cultivars like 'Magical Amore' if the soil has been depleted by successive blooms.
Extreme heat or sudden exposure to intense afternoon sun can cause leaves to bleach and turn yellow. 'Magical Amore' prefers filtered light, and direct scorching can disrupt chlorophyll production.
Your plant might also be experiencing one of these issues:
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