REGIONAL HAPPENINGS

摘要

Last fall Ladew Topiary Gardens in Harford County, Maryland, made its first surrender in a long battle with the hemlock woolly adelgid (Adelges tsugae) by removing a 60-year-old wall of eastern hemlock trees. This 15-foot-high wall surrounding the Croquet Court was planted by the gardens' first owner, Harvey Ladew, in the 1930s. Impatient to seej-esults, Ladew selected the fast-growing hemlocks not only for this wall but also for most of the topiaries and hedges in the gardens. The loss of this wallis just one step in a long process of replacing embattled hemlocks throughout the gardens.