Xylosma leaves falling off – red veins

Question

My Xylosma hedge is losing a lot of leaves, especially new growth (it’s spring in Sydney Australia). The leaves are getting red veins, which gets darker and wider.
We have just had a lot of rain over two weeks and the ground is soaked. But I’m not sure when the problem started. Attached is pictures of diseased leaves and hedge.

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Answer 1

This is, actually, completely normal. These will redden as the shrub becomes mature.