Selected from a massive parent tree in Afton, Minn., the ‘St. Croix’ American elm joins the ranks of Dutch elm disease-tolerant elms with a Minnesota twist. Since its discovery by U of M alumnus Mark Stennes, researchers in the Departments of Plant Pathology and Forest Resources have cloned and screened the tree for Dutch elm disease tolerance. Young specimens grow at an incredible pace and have gracefully arching branches and dark green leaves. Like all American elms, ‘St. Croix’ can thrive in tough environmental conditions.
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