Grafting the future of the ash tree

JENNIFER KOCH, a research biologist with the U.S. Forest Service‚Äôs Northern Research Station in Delaware, Ohio, carefully peels back the outer layer of the bark of an ash tree with the tip of a grafting knife. The work is slow; she must be gentle or risk severing the tiny, wormlike white larvae that she is … Continue reading Grafting the future of the ash tree