‘KORbaymun’ is a new and distinct variety of Rosa hybrida which is characterized by the combination of an upright and bushy growth habit, a moderately vigorous rate of growth, panicles bearing one to five white flowers suffused with red and irregularly striped and margined red, semi-double flowers with light fragrance, and excellent resistance to common rose diseases. The new variety propagates successfully by stem cuttings and grafting and has shown to be uniform and stable in the resulting generations from asexual propagation.
