Answer: Bougainvillea's are very susceptible to transplant shock because their roots are fragile, so perhaps that's the answer to why some plants are thriving and some are not. Bougainvillea's vibrant colors come not from its small flowers, but from the three large bracts that surround them. They bloom on new shoots that develop from old wood, so pruning them back in the spring and summer will encourage new flowering wood. If the plants are small, just pinch the tips out and the stems will branch out. The plants will need some shelter from hot afternoon sunshine, and require very little water once they're established. (Until then, supply about one-inch of water per week to the root area.) Hope this information helps!
Q&A Library Searching Tips