From the perspective of Cultural History, this work investigates the representations of nature in three Brazilian novels of the 19th century: A Moreninha (1844), by Joaquim Manoel de Macedo, O Guarani (1857), by José de Alencar and O Cabeleira (1876) , by Franklin Távora. Such works were published between the 1840s and 1870s, a period in which the novel genre developed in Brazil and became part of the reading practices of increasingly wider audiences. In this context, the theme of nature had great relevance, as it was related to discussions about the creation of national literature and the formation of Brazilian nationality. Drawing on the work of Simon Schama, Keith Thomas and Raymond Williams, this study considers the concept of nature as a product of culture. From the 16th century onwards, modernity developed new values and ideas in relation to nature; so, places previously considered wild, like the forest, the mountain or the sea, are rehabilitated and come to be seen as carriers of delight and contemplation. What is observed is a "selective cultural adaptation", through which conceptions relating to the natural world are re-signified according to historical circumstances. Relying on studies by Roger Chartier, this work considers that the Brazilian novelists of the 19th century were readers of a cultural repertoire about nature. In the context of cultural transfers between Brazil and Europe, these authors appropriated a tradition about nature and recreated it in their novels, in order to convey their own ideas about the natural world. In addition, these narratives had a pedagogical function, as they composed a new repertoire of emotions related to nature, playing a relevant role in the aesthetic education of the reading public. In the novels, we identify the representation of nature-garden, submitted to human rationality, kind and welcoming, conducive to experiencing emotions in a context characterized by civility. However, the works also expressed the nature of the wild and threatening forest, marked by brutality and violence, capable of making the construction of nationality unfeasible. Such a perspective imposes on novelists the need to harmonize the representation of the natural world with the construction of an ideal of Brazilian civility; in this sense, the challenge presented was to elaborate a narrative in which the ideal of nationality would be formed from the integration of the world of nature to the world of culture. This undertaking could only be carried out when nature was submitted to human rationality. Thus, the natural world thought by novelists to deposit national ideals must be disciplined by the ordering and civilizing action of culture.