Hybrids of complex origin, selected for nut production, hardiness and disease resistance in northern North America.
USDA Hardiness Zone 3-4
RHS Hardiness Rating H7
At the Badgersett Research Corporation in Minnesota, a large-scale breeding programme running since the 1980s has combined the genes of European fruiting hazels with both Corylus americana and C. cornuta from sources in Wisconsin and Iowa (Badgersett Research Corporation 2023), resulting in compact bushes which at their best are free-fruiting, very resistant to Eastern Filbert Blight and potentially hardy to American Climate Zone 3. Open-pollinated seedlings are sold by the Corporation from selected mother plants (Experimental Farm Network 2023). Named clones from this gene pool incude NITKA© and ‘Photon’, selected by J. Zarnowski in New York (Muehlbauer, Capik & Molnar 2021). Twelve more clones were under development in 2021 by the Upper Midwest Hazelnut Development Initiative (Muehlbauer, Capik & Molnar 2021).