New Hemlock Hybrid Withstands Killing Insect
Friday, April 17, 2020
Posted by: Dana Walker
WASHINGTON, D.C., April 14, 2020—A first-of-its-kind hybrid hemlock, which is not
vulnerable to the insect hemlock woolly adelgid, has been developed by the Agricultural Research Service's (ARS) U.S. National Arboretum.
Traveler, as the new variety is named, is a cross between the Chinese hemlock (Tsuga chinensis) and the native Carolina hemlock (Tsuga caroliniana). The new tree has the native hemlock's handsome symmetrical evergreen growth habit with slightly weeping branches It has a moderately slow growth rate and produces large cones.
But its most important characteristic is the ability to survive attack from the hemlock woolly adelgid.