Gold

An improved medicinal cultivar of Hypericum perforatum evaluated in an ex situ common-garden study in Iran, where it outperformed a wild Iranian (Ardabil) population in phenological, morphological, and chemical traits. Its naphthodianthrone (hypericin plus pseudohypericin) content averaged about 0.091% dry weight versus roughly 0.012% in the wild population (about a tenfold difference).