Bougainvillea (Bougainvillea spectabilis Willd.) is one of the most important flowers in the tropical region. In this study, effect of different cutting times (June, July, August and September) on different vegetative characteristics of Bougainvillea “Red flower” was evaluated. The experiment was conducted in a completely randomized design with four replications. According to the results, the highest fresh and dry weight of root, and root length was observed in June. Other traits such as number of leaves, number of shoots, shoot length, fresh and dry weight of shoots and root length significantly increased in cuttings taken in July compared to other months. It can be concluded that July is the best time for cutting propagation of Bougainvillea “Red flower” in tropical conditions.