The theoretical promise of enhancing democratic deliberation within the decision-making process is attractive to greens. The institutionalisation of deliberation offers a context within which the plurality of environmental values can be effectively articulated and considered. For the most part, the work on the relationship between deliberative democracy and environmental politics remains a theoretical discussion, with little or no detailed debate on questions of institutional design. The pressure, then, is on advocates to move beyond the simply aspirational. Greens may have good reason to express interest in democratic deliberation, but, if the constructive and practical element of institutional design is not developed, that interest will wane.