Both Gewürztraminer and Riesling do best in cool climates.Gewürztraminer ripens early and is harder to grow. It's susceptible to diseases.Riesling can withstand cold winters. And it's late budding and late ripening.
Gewürztraminer and Riesling are usually made as single varietal wines. They're fermented in stainless steel at cool temperatures to preserve their fruit flavors.Both are made in dry, off-dry, and sweet styles.