In this article, we use plants to think about territory, a concept that is at once a bulwark of social theory and an under-theorized category of social analysis. Scholarship on plants brings together three overlapping approaches to territory: biological and behaviorist theories; representational and cartographic perspectives; and more-than-human analysis. We argue that these three approaches are not mutually exclusive. Rather, different epistemologies of territory overlap and are imbricated within each other. We further argue that these three approaches to territory inform three distinct domains of territoriality: legibility and surveillance; ordering and classification; and exclusion and inclusion. Through examples of how plants operate in these three domains, we illustrate the analytical potential that a more-than-human approach to territory provides. We conclude, however, that attention to the particularities of plant ecologies can help move multispecies discussions more firmly into the realm of the political economic.