Narrow vertically growing tree with branches that bend outwards somewhat, thereby forming a narrow vase-shaped crown. 'Sunset Boulevard' is a stronger grower that can attain a height of 8 - 10 m. The leaves are green and sometimes have bronze tops when they first emerge. The tree produces white single flowers with a pink edge. They are saucer-shaped and grouped in twos. Does not produce fruit. It is suitable as a park tree, a street tree and for the small garden. It does not stand up to wet soil. 'Sunset Boulevard' came into existence as a seedling of P. serrulata 'Benden' in the Belgian Kalmthout Arboretum in 1988. Winter hardiness zone: 6a