In this paper, we trace the emergence of what we term the digital plant humanities—abbreviated as DPH throughout—as an evolution of burgeoning botanical interest among environmental and digital humanists. We argue that DPH coalesces the theoretical and methodological frameworks of the three research areas of plant humanities, environmental humanities, and digital humanities. After conceptualising DPH, we analyse three projects representative of the emergent field—the Native American Ethnobotany Database; Herbaria 3.0; and Microcosms: A Homage to Sacred Plants of America—while referring to a broader range of formative projects including the Plant Humanities Lab.