Answer: Wilting leaves are usually a sign of water stress, but they can also indicate a disease or problem with the roots. Let's hope that the problem is either water or weather related and not a disease. You can prune your bougainvillea back to encourage new growth and also to remove the affected leaves. Be sure to water your plant well, taking into consideration that the roots will be deep and wide on an old plant. Allow the soil to dry out between waterings. I hope that does the trick!
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