Tree lilac cultivars tested as street trees: initial results.

摘要

Three Japanese tree lilac (Syringa reticulata) cultivars, 2 each in 11 communities, were planted for evaluation as street trees in Pennsylvania and New York, USA, between 1987 and 1996. Trees were measured annually for 3 years, and periodically afterwards. 'Ivory Silk', 'Regent', and 'Summer Snow' performed well at all locations: all three 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.