This article examines the enclosure of the de facto commons that surrounded New Orleans during the final decades of the nineteenth century and argues that public parks were crucial tools deployed by civic elites on behalf of that initiative. As the regulatory efforts of reform-minded mayor Joseph A. Shakspeare failed to eliminate the persistent “cattle nuisance” that emanated from the undeveloped suburbs, he turned to parks as a means of fundamentally transforming the character of the land. By physically enclosing large swathes of acreage, conditioning the public to be urban subjects, and associating the area with leisure rather than agrarian production, the parks made it possible for the city’s modernizers to push dairy farmers out of the area and initiate a process of residential development. By examining this strategic use of greenspace in Gilded Age-era New Orleans, this article seeks to shed new light on the ways in which the urban environment was manipulated in service of the broader New South movement.