Category Archives: hemlock treeshemlock wooly adelgidswallow falls state park

>State battles woolly pest to save evergreens

>Crews inject pesticide, cultivate beetles to protect hemlocks By Timothy B. Wheeler, The Baltimore Sun 11:31 p.m. EDT, May 11, 2011OAKLAND —— Survivors for more than three centuries, the towering hemlocks in Swallow Falls State Park are a remnant of … Continue reading

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