A structural model was developed for Eucalyptus nitens from relationships between leaf area and stand structural components, and was incorporated into an existing hybrid model. The existing hybrid model combines the process-based site productivity model ProMod and an empirical stand growth model NitGro. The modified hybrid model was used to predict the development of stand leaf area and stand crown length in 17 diverse stands of E. nitens in Tasmania. We demonstrate how the model can be used to identify sites for pruning based on site productivity, predicted leaf area index, and minimum piece sizes required at the end of the rotation; schedule pruning operations based on height to the base of the green crown and leaf area index, and schedule thinning to minimise height-related windthrow risk.