Third World Quarterly, 2015 Vol. 36, No. 12, 2316–2336Governments, donors and investors often promote land acquisitions for forest plantations as global climate change mitigation via carbon sequestration. Investors’ forestry thereby becomes part of a global moral economy imaginary. Using examples from Tanzania we criti- cally examine the global moral economy’s narrative foundation, which presents trees as axiomatically ‘green’, ‘idle’ land as waste and economic investments as benefiting the relevant communities. In this way the traditional supposition of the moral economy as invoked by the economic underclass to maintain the basis of their subsistence is inverted and subverted, at a potentially serious cost to the subjects of such land acquisition.