Why does your Hydrangea macrophylla Magical Ornament have yellow leaves? Diagnose the cause and fix it with our step-by-step guide.
Hydrangea macrophylla is highly sensitive to soil alkalinity. If the soil pH rises above 6.5, iron becomes chemically unavailable to the plant, causing interveinal chlorosis where veins stay green while leaves turn yellow.
Excessive moisture in heavy soils deprives roots of oxygen, leading to root decay. This prevents the 'Magical Ornament' variety from transporting nutrients upward, resulting in uniform yellowing and wilting.
A lack of nitrogen prevents the production of chlorophyll. In hydrangeas, this typically manifests as a pale yellowing that starts on older, lower leaves and progresses upward through the plant.
While they love light, intense afternoon sun can scorch the large leaves of 'Magical Ornament'. This physiological stress can cause leaf tissue to bleach or turn yellow before turning brown.
Your plant might also be experiencing one of these issues:
English
Italiano
