1 Gallon Angel Trumpet Brugmansia Pink Tree Bloom Live Plant These plants are hardy in USDA Zones 9- 11. These plants can reach a height of up to 20 feet tall and spreads 10 to 15 feet wide. They will grow in full sun to partial shade. These trees will bloom most of the year- from spring until fall Most of these plants are between 6 and 9 inches tall.