The Birjia, a Particularly Vulnerable Tribal Group (PVTG) of Jharkhand, possess a rich, but rapidly eroding body of Indigenous Plant Knowledge that remains poorly documented in the ethnobotanical literature. The present study documents the Indigenous Plant Knowledge of the Birjia in the Dauna and Purandih villages of the Mahuadanr block and the Batuatoli village of the Netarhat block of the Latehar district, Jharkhand, India. Field data were collected through semi-structured interviews and guided field walks with key informants identified through snowball sampling, a method suited to small, dispersed populations in which specialized knowledge is concentrated among a few elder practitioners. A total of 14 plant species distributed across 12 families were recorded as remedies for 14 categories of ailment, ranging from common complaints such as fever, cough, and stomach ache to culturally significant conditions such as barrenness and induced abortion. Roots were the most frequently used plant part (6 of 14 remedies), followed by bark and leaves (three each) and by seed and tuber (two each), and preparations were predominantly administered as pastes and decoctions taken orally or applied topically. 

All botanical identifications were checked against Plants of the World Online and the International Plant Names Index to ensure currently accepted nomenclature. The study also situates plant-based healing within the wider Birjia worldview, in which persistent illness is attributed to malevolent spirits or ancestral displeasure and is referred to a ritual specialist for diagnosis. Some recorded species, notably Peucedanum dhana (Bhojraj), have been described in the literature as rare or endangered, underscoring the urgency of recording this knowledge before it is lost to acculturation and generational discontinuity.