Why does your Rhododendron atlanticum have white powder? Diagnose the cause and fix it with our step-by-step guide.
This fungal disease is common in Atlantic Azaleas when humidity is high and air circulation is poor. It manifests as a white, flour-like coating on the surface of leaves, which can eventually lead to leaf yellowing and premature drop.
Small, soft-bodied insects that secrete a white, waxy substance to protect themselves. In Rhododendrons, they often cluster at the leaf axils or new growth, appearing as small tufts of cottony white material.
Certain types of scale produce a white, waxy secretion that can resemble powder or crust on the bark and leaves. This pest sucks sap from the Atlantic Azalea, causing stunted growth and potential leaf distortion.
Your plant might also be experiencing one of these issues:
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