Abstract: In this study, nutrient concentrations (N, P and K) in above and below ground parts of Helleborus orientalis Lam. which has several medicinal properties were examined during vegetative and generative growth periods. There were significant differences between two growth periods in different parts of H. orientalis in terms of N and K concentrations. We have only found statistically significant differences between the studied localities, in terms of K concentrations. There were no significant differences with respect to soil factors except K and organic matter concentrations of the studied localities. Our findings are supported the vernal dam hypothesis.