See attached pictures and tell me what I need to do. Does it need more water.
Certified GKH Gardening Expert
The soil does seem a bit dry. You may want to repot as well. It could be getting rootbound. Add fertilizer, dolomitic lime, and wettable sulfur to the soil to condition it and keep it happy. Here is an article for more information on the care of these: https://www.gardeningknowhow.com/ornamental/vines/bougainvillea/bougainvillea-garden-care.htm