Scientists in North Carolina are trying to blend characteristics to make the hardiest 'perfect' Christmas tree.

Christmas tree geneticist John Frampton rubs the sprigs of a two-inch seedling, planted two years ago from the seed of a fir cone from the Uludag Mountain region in western Turkey.

This Uludag seedling tube is one of thousands in a greenhouse at North Carolina State University, where Mr. Frampton tests DNA and blends characteristics of trees from around the world in search of the perfect Christmas tree. Wall Street Journal

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