These are the signs of rust or powdery mildew. They love the water and as a result often occur during humid and wet weather.
These are the signs of longihorn (borer). Borer attack plants stressed by drought or disease.
The black patches on your daphne leaves sound like a fungal leaf spot which is caused by high humidity.
CAUSE: Grey mould is a fungus that causes bud and flower blight. It is active in cool humid weather.