At Klosterneuburg, he bred what became known as the Zweigelt grape from Blaufränkisch and St. Laurent in 1922, and Blauburger from Blaufränkisch and Blauer Portugieser the following year.
Some red varieties are grown, particularly around Ingelheim and Gundersheim, including Pinot noir, Blauer Portugieser, Dornfelder, and the recently established Regent.