Tags: Cultivar (Cultivated Variety).
Geheimrat Dr. Oldenburg is a German apple cultivar. It was created in 1897 at the Höheren Lehranstalt für Obstbau of Geisenheim in the Rheingau by hybridisation of Minister von Hammerstein and Baumanns Renette. It may also be known as Geheimrat Doktor Oldenburg Geheimrat Oldenburg or simply Oldenburg. It is a quite different apple from the older Russian cultivar Duchess of Oldenburg.
