Anything that is obviously dead should be cut off now. Dispose of prunings in household rubbish to prevent spread from infected wood to healthy wood.

Have to agree with @MitchellMc that the most likely cause is a bacterial disease such as canker. There's a good NSW Department of Primary Industries F ...

Welcome to the Bunnings Workshop community @genevieve. It's fantastic to have you join us and many thanks for your question. As you have read it is ...