Why does your Hydrangea macrophylla Magical Bolero have white cottony spots? Diagnose the cause and fix it with our step-by-step guide.
These small, soft-bodied insects secrete a white, waxy, cottony substance to protect themselves. They congregate on the stems and undersides of leaves of Hydrangeas, feeding on plant sap and causing leaf yellowing.
This scale insect produces a thick, white, felt-like coating over its body. On Hydrangeas, it can cause swelling of the stems and the production of honeydew, which leads to black sooty mold.
While typically appearing as a dusty coating, certain fungal stages can look like light white fuzz on the leaf surface. High humidity and poor airflow around the dense foliage of 'Magical Bolero' promote this condition.
Your plant might also be experiencing one of these issues:
English
Italiano
