The amount of elements in plants is important for biogeochemical explorations. Some plants which were accumulated extremely elements, are called indicator plants. In this study, the 11 plant species and soil samples were collected boron deposits area in Kirka (Eskisehir). Boron is determinated in plants (leaves and twigs) and soil samples. Additionally, statistical relations were established between the B values of plant and soil samples and three plants were only found. The boron in twigs of Puccinellia intermedia (n = 17, r = 0.7274), twigs of Genista aucheri (n = 26, r = 0.8581 and leaves of Pinus nigra (n = 16, r = 0.6805) species are found 119, 81 and 115 mg/kg respectively. This species was reflected boron in soil and their used indicator plant for boron. The indicator plants could be successfully used for biogeochemical prospecting and environmental monitoring.