Adaptability of Introduced Hypericum patulum in Tianshui Prefecture, Gansu Province

The growth rhythm of introduced Hypericum patulum and its adaptability to the natural conditions in Tianshui Prefecture, Gansu Province were understood by on the spot investigation and observation of the introduction experiment plots.It was believed that Hypericum patulum was a potential ornamental shrub species that would be suitable to the humid, half-humid and semi-arid regions in the subtropical, warm temperate and temperate zones in northwest China