Rhododendron calophytum · Shrub
Vine weevil: Apply nematodes in autumn or use biological controls like Steinernema carpocapsae.
Powdery mildew: Improve air circulation and apply a fungicide if infection is severe.
Bud blast: Remove and destroy infected buds promptly to reduce fungal spread.
Silver leaf fungus: Prune out affected branches well below the infection and burn them.
Rhododendron leafhopper: Monitor for damage to flower buds; control is rarely needed as feeding impact is low.