Tree lilac cultivars tested as street trees: Initial results

Abstract

Three Japanese tree lilac (Syringa reticulata) cultivars, 2 each in 11 communities, were planted for evaluation as street trees. Cooperators in the Municipal Tree Restoration Program using standardized methods measured them annually for 3 years, and periodically afterwards. 'Ivory Silk', 'Regent', and 'Summer Snow' performed well at all locations. All 3 cultivars grew slowly initially, and their foliage tended to turn yellow in late summer. Height growth of 'Summer Snow', reputed to be slower than 'Ivory Silk', was not slower at all locations.