11. Many poplars are grown as ornamental trees , with numerous cultivars used. 12. It is also grown as an ornamental tree in gardens in cold regions. 13. ORNAMENTAL TREES : Plant acacia, dogwood, forsythia, lilac, mimulus, flowering quince.14. Its uses include environmental management and it is also used as an ornamental tree . 15. Ornamental trees need to be trimmed occasionally to maintain structure, health and pleasing appearance.16. The Nam Tu royal garden features an orchidaceous garden and valuable bonsai ornamental trees . 17. This ornamental tree matures to 12 to 20 feet in height and is pest-free. 18. Ornamental trees are usually measured at 1.5 metres above ground.19. Updates included historic style street lamps, ornamental trees , brick planters and new flag poles. 20. Being drought resistant and attractive, the Leopardwood is an ornamental tree for drier areas.