Other Plant Diseases

My Dad’s succulent has a nasty disease consuming the old parts of the plant. I’ve taken cuttings and grown some disease-free backups, but how do I save this original plant. Do I cut off all the old diseases parts?

Please help. How do I get mould (white) off my Clematis Duchess of Albany? It has lovely pink flowers but the mould looks terrible. 

Can you suggest any organic methods to control leaf curl in nectarines? 

My large lawn is now suffering from moss infestation. It started from the damp-shaded part of the lawn and has slowly spread to the rest. What remedy will control or eradicate the moss?

I have discovered what looks like bora on our nectarine tree. We treated our house for bora last summer. Could the bora have spread from the house to this fruit tree? How can we treat it so the fruit will be safe to eat?