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One in Four Tree Deaths in Blue Ridge Mountains Linked to Invasive Species | Smithsonian's National Zoo
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Tsuga mertensiana 'Bump's Blue' / Bump's Blue Mountain hemlock | Conifer Trinomial | American Conifer Society
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Foliage of the Evergreen Conifer Western Hemlock Tree (Tsuga heterophylla) with a Bright Blue Sky Background in a Woodland Garden Stock Photo - Alamy
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