Agroforestry systems (AFS) are farming systems that associate trees, crops and animals. They cover a variety of management options and spatial arrangement [Dupraz et al, 2011]. Therefore, co-design workshops are an efficient way to design AFS. To design the spatial arrangement of species, participants often interact with a physical mockup [Chieze et al, 2021], locating plants to define the system structure. But despite the numerous exchanges between participants, the resulting ecosystem functions are difficult to perceive [Potschin et al, 2011]. Building models for agroforestry is a growing concern [Burgess et al, 2019]. However, agroforestry models seldom express both structural and functional representations. Some, such as Hi-safe [Dupraz et al, 2019], focus on functional aspects, extending crop model approaches. Others, such as EcoAF [Liagre et al, 2019], focus on the structural descriptions of the system, applying pattern grammars to describe the spatial arrangement of species. These approaches are difficult to mobilize in co-design workshops, facing in the first case the lack of visualization supports and complex parametrization, and, in the second case, the lack of interactions between elements of the modeled system and the scarcity of ecosystem services that are considered. In the review of Sereno et al. (2022), Augmented Reality (AR) is shown to be efficient for collaborative work. This technology could allow the co-design workshop participants to share a common vision of the AFS and its functioning. Using traditional functional – structural plant model (FSPM) with AR during design workshop is promising to link scientific knowledge, visualization, interaction and collaboration.