About Hazelnut Bushes
1) Are Hazelnut bushes suitable for clay soils? 2) How many years until nuts are produced? 3) How tall do these bushes grow?
Frederick County Maryland
Hazelnuts may grow but may not produce nuts reliably. Hazelnuts are susceptible to Eastern Filbert Blight. Look at the publication from Oregon for more information https://www.extension.umn.edu/environment/agroforestry/components/hybrid-hazelnuts.pdf
Also, look at the link From Edible Landscaping regarding culture and resistant cultivars http://ediblelandscaping.com/products/nuts/Filberts/