I am in dire need of some expert advice. I have just moved to Gard in the South of France and I have several Olive trees which I need to now care for. I have two large ones which are beautiful. They have a handful of rusty looking leaves which I have removed (did I do the right thing?) Otherwise I'm leaving them be as they are thriving.
My concern is for the ones I have in pots on my patio.
the leaves are mottled yellow and brown. The first one is the worst and the other two potted ones have fewer blackened leaves but aren't exactly a lovely green colour either. My questions are first, what is this disease, second how do I get rid of it, third can I prune and plant these trees in the garden at this time of year and, lastly, if I can how do I plant them in the best way to ensure their survival and health?
Here are the other two potted trees:
Any help and advice would be greatly appreciated.