Ornamental plants have been used in a variety of indoor and outdoor gardens, and interest in them is increasing regarding their applications in landscape and horticultural therapy. As the use of new ornamental plants is increasing, it is important to develop propagation methods and understand the flowering of each plant for the use of ornamental plants. Although many studies related to propagation and flowering have been conducted, many questions remain with regard to a variety of plant species. Expanding the use of ornamental plants by controlling various environmental factors, as well as the growth response of plants in natural conditions, will help us to use ornamental plants in indoor and outdoor gardens. Therefore, this reprint aims to expand our understanding of propagation and flowering in ornamental plants.