West Sussex,
United Kingdom 
Asking for a friend. The shrubs planted in the shade of the Pittosporum tree are dying off. She has already removed a Camellia and a Choisya. The unknown shrub in the centre is now dying. They are/were all well established shrubs.
13 Sep, 2024
Answers
It looks a very dry area Shirley...have the shrubs been watered regularly? A Camelia has to be moist in order to produce buds for next Spring...hope that helps.
14 Sep, 2024
Julia, I have sent her a link to the RHS website with regards to this issue. It's strange as she says all the well established shrubs are dying, whereas the more shallow rooted plants are fine. I wonder if there is a fungus or something, deep down in the soil.
14 Sep, 2024
Looking again I can see the Pittisporum tree is brown in some areas.
14 Sep, 2024
Yes, I thought that too.
14 Sep, 2024
She sends apologies for the poor photo. Perhaps you could enlarge it on your screen?
13 Sep, 2024