Has the growing pro-environment rhetoric in ASEAN-China relations resulted in the effective mainstreaming of environmental issue into trade agreements and multilateral cooperation frameworks? The article discusses the cases of the ASEAN China Free Trade Area (ACFTA) and the Greater Mekong Subregion (GMS) and argues that there is no shortage of national and regional policy agendas that visibly link trade growth and environmental considerations. However, this nexus is still a weak one in terms of implementation and effectiveness. The most promising initiatives towards an effective reconciliation of trade growth and environmental sustainability are promoted and often driven by foreign donors, most prominently the European Union (EU).