Betula populifolia x 'Royal Frost'An excellent cultivar for providing a dark foliage in the landscape, where it provides soft filtered shade. Has superior apical dominance and vigour in comparison with other purple leafed birch. Ideal for planting as a specimen or in a cluster or copse, particularly when used against complimentary foliage colours and surfaces. A hybrid between Betula Crimson Frost and B. Whitespire that combines the best attributes of both cultivars. Growth Rate