The bovine spongiform encephalopathy (BSE) crisis challenged one of the basis principles of modernity: the divide between nature and society. In a case study on the German agricultural sector, I analyze how the societal actors responded in order to cope with the crisis. In their attempt to re-establish the division between nature and society, they employed the ambivalences of this relationship for strategic purposes. The actors sought to relocate or to newly define the boundary in line with their own ideas and interests. It can be seen how "nature" was frequently used as legitimizing ground in the narratives. The analysis of the politics of nature aims to add a process dimension to Latourian diagnosis of the eroding nature-society divide.