Abstract: Rhododendron is one of world famous ornamental plants. However, the cutting propagation is difficult, which restricts its application in the landscapes. To explore optimal propagation techniques by cutting propagation, the author studied the effects of different IBA concentrations and IBA application methods on Rhododendron ‘Nova Zembla’ cutting propagation. The results showed that IBA concentration and IBA application method significantly affect the cutting propagation of Rhododendron. In the range of 0 to 15000 mg/L IBA, the rooting percentage increased with the increasing of IBA, and the rooting percentage was more than 95% when IBA concentration was over than 10000 mg/L. Under the same IBA concentrations, the stem cuttings treated with powder state of IBA rather than liquid state had higher rooting percentage. The stem cuttings soaked for 24 hours at 200 mg/L IBA generated 70.79% of rooting percentage. The rooting was also promoted by making a slice wound between cortex and cambium layers along the side of the bottom. This study suggests that the cutting propagation is a feasible method for the commercial cultivation of Rhododendron, and has significantly influence on the development of industrialization.