My proprietary Gardenberries, they are a cross between a Krauter Vesuvious Myrobalan plum, seed parent, x Unknown pollen.
One scored a 24 brix and the other one a 27 brix.
I have a question for you, do these fruits look pure Myrobalan plums or more like a hybrid? The plum trees that are growing close to the myrobalan plum tree are Santa Rosa, a green skin plum, and Satsuma plum. And even closer, an F1 Moorpark Apricot. In comparasion to the seed parent, my gardenberry tree produces red leaves in Spring and Dark-Green leaves in Summer compared to red leaves throughout Spring and Summer.