Swidden cultivation has long been seen as incompatible with state goals for development, modernisation and environmental protection in Vietnam. This article provides a history of anti-swidden programmes since the French colonial period: how targets were selected, how different justifications were used, how interventions were implemented, and what the impacts were. Shifts occurred over time in targets, tools, and techniques, due to leeway available to local officials and resistance of target populations, but which also prolonged overall anti-swidden campaigns by providing opportunities for continual reinvention. Shifting justifications have allowed for new funding and approaches over time, while remaining rooted in misunderstandings and cultural chauvinism.