Imaginaries of empty, verdant lands have long motivated agricultural frontier expansion. Today, climate change, food insecurity, and economic promise are invigorating new agricultural frontiers across the circumpolar north. In this article, I draw on extensive archival and ethnographic evidence to analyze mid‐twentieth‐century and recent twenty‐first‐century narratives of agricultural development in the Northwest Territories, Canada. I argue that the early frontier imaginary is relatively intact in its present lifecycle. It is not simply climactic forces that are driving an emergent northern agricultural frontier, but rather the more diffuse and structural forces of capitalism, governmental power, settler colonialism, and resistance to those forces. I also show how social, political, and infrastructural limits continue to impede agricultural development in the Northwest Territories and discuss how smallholder farmers and Indigenous communities differently situate agricultural production within their local food systems. This paper contributes to critical debates in frontiers and northern agriculture literature by foregrounding the contested space between the state‐driven and dominant public narratives underpinning frontier imaginaries, and the social, cultural, and material realities that constrain them on a Northwest Territories agricultural frontier. [ABSTRACT FROM AUTHOR]