Answer: The most common reasons for a purplish tint to the leaves is exposure to cold weather (not likely in mid-summer) and a mineral deficiency in the soil. Sometimes pruning wounds can make the leaves take on a purplish tint, or insect feeding might do the same. If you haven't pruned and you haven't had cold weather, then your tea olive may need to be fed. I think I'd prune off the affected leaves - just in case there's an insect infestation. Good luck with your tea olive tree.
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