Due to the lack of physiological and ecological characteristics while modeling plant morphology, the law of plant development cannot be expressed in the model. To solve this problem, a new plant morphology modeling method was proposed based on growth kinetics. Taking the plant-reed as an example, firstly, the growth kinetics of plant was studied, and the morphological model of plant was constructed based on the effective accumulated temperature and growth rate. Then the topological change of plant canopy structure was described using Open L-systems (Open-L) method. Finally, the algorithm of constructing virtual plant development model was presented by coupling with the geometric model and displaying model of plant topology and organs. The simulation results demonstrate that the proposed method is effective and feasible in visualizing the morphogenesis of plant and reflecting its growth mechanism, which also provides valuable evidences for dynamical control and prediction of plant development.