The “plant turn” in anthropology, while controversial, has led to a renewed focus on how humans relate to different species of plants. In this article, I aim to contribute to our knowledge of human-plant relationships by analyzing how historical actors used sacred plants in past ritual settings. I study criminal and civil cases involving shamans in late colonial Ecuador, with a focus on plant use. Legal records from 1782, 1793, 1800, and 1802 reveal information about the use of fragrant plants (...) believed to have transformative properties, the use of entheogens for non-visionary purposes, and even the incorporation of the sacred wanduc (Brugmansia sp) into the punishment of one shaman. This plant-focused approach to the reading of ethnohistorical documents provides a history of particular plants as they were used by individual actors in specific geographic and historical contexts, and sheds light on people’s understanding of human-plant-spirit relationships. (shrink)