Charlemagne's peaches: a case of early medieval European ecological adaptation

What happened to the many 'Mediterranean' fruits the Romans brought to north-west Europe when the empire that supported their dissemination ended? Charlemagne's capitulary De villis called for the cultivation of various fruit trees, including peach (Prunus persica). That fruit hits the sweet spot between plants that were rare in early medieval northern Francia, like date palm, and those that were commonplace, like plum. Thus, the peach is an excellent proxy for Charlemagne's imperial and ecological aspirations. Using both written and archaeobotanical evidence for peaches in Francia, this article analyses how adapting exotic plants to northern climates served the purposes of early medieval rulers.