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Department of Agriculture selected 105 eastern hemlock trees in national and state forests along the Appalachians from Maryland to Georgia.

During the last ice age, glaciers came close to Hocking Hills, leaving behind species, such as eastern hemlock and Canada yew, more often seen on the alpine tundra.

The eastern hemlock is not one of those ubiquitous, celebrity trees such as the white oak or the white pine.

There are efforts by other plant scientists at the University of Rhode Island and elsewhere to revive the eastern hemlock, using cuttings from rare survivors in the wild with an innate resistance to the pest.

Scientists have since reared and released more than 400,000 of the beetles at sites throughout the eastern hemlock’s range and watched some populations take hold.