These branches are very unfavorable in shaping, but they are easily broken when they are wrapped with wire, pulled with wire, or bent, so be more careful when shaping, not strong.
We should deal with bougainvillea bougainvillea branches first, and cut them up, down, left and right with a knife where they are to be bent. The direction of the knife should be parallel to the branch, that is, cut along the branch, not around the circle.
After cutting the branches, wrap the place where the knife has been cut with tape, and then gently twist it to make it soft. This will make it easier and not easy to break during plastic surgery.
Before modeling, you can contact the thinner branches first, and then use the thicker branches for plastic surgery.
After practice and experiment, you will find that this plastic way will not have a bad influence on the growth of plants. Because bougainvillea has strong healing ability, it can heal quickly.