Answer: Tibouchina semidecandra is the Princess flower, one of my favorite flowering shrubs. Your plant lost its buds because it was stressed from the transplanting process. It should recover without any special effort on your part. It's usually a good idea to transplant before or after the plant's blooming period so it doesn't have to support flower buds while it's trying to adjust to a new home. Here's some background information on your new plant:
Princess flower forms a soft mound of attractive evergreen foliage up to 10' tall. The plant is covered with purple flowers most of the year. Leaves are velvety green, up to 3" long and have from 3 to 5 midribs running up and down the length.
Native to Brazil, Tibouchina is a very popular landscape plant in frost free areas around the world.
Give your plant full sun, with some shade in hot summer areas, and moist, fertile soil. Princess flower is hardy to USDA Zones 9-10, and frost will kill it to ground level, but it quickly returns the following spring.
Use in shrub borders and foundation plantings.
This fast growing shrub is quick to recover from frost and freeze die-back. It's very attractive bright purple flowers are especially enjoyable and good for cutting. Fertilize after each bloom cycle for optimum flowering.
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