An individual tree/distance independent growth model was constructed for trembling aspen in the prairie provinces of Canada. Five basic relationships are integral to the model; mortality, diameter growth, height growth and site differentiation, volume estimation, and biomass estimation. The first two relationships were developed specifically for this study; the latter three were obtained from the literature. The aspen growth model provides summaries of stand characteristics by diameter class at selected ages for the simulated stand. Testing and evaluation indicated satisfactory model performance and significant advantages for the model structure chosen.