Like many of the hemlocks in Nova Scotia, these trees are threatened by an invasive insect known as the hemlock woolly adelgid. The insect is a threat to hemlocks across Nova Scotia, but the need for a solution is particularly urgent in Kejimkujik given the presence of rare old-growth hemlock forest. "We don't have a very good handle on how quickly the HWA spreads in Nova Scotia. (Parks Canada)Fortunately for Nova Scotian hemlocks, researchers can draw on work done in the eastern United States, where scientists have been investigating similar approaches for decades. Even with American research helping to expedite the process, it could be at least 15 years before this approach yields measurable results in Nova Scotia.

Source: CBC News August 10, 2020 09:00 UTC