A tree of strawberry called bokbunja which is a lump of red grains, lives in the mountains. The tree has curved branches and thorns, reaching 3 meters-high. It was used as a cure in Chinese medicine. In Korea it lives in hwang-hae-do and Jun-Buk. It also exists in Japan and China. It is qualified as a good medicinal stuff. The fruit ripens jin June July. It's dark red and tastes sweet and sourish.

It is written Bokbunja in chinese. It means that the fruit makes the man so energetic that the chamber pot is almost turned over when he urinates. In Dog-eui-bo-gam, it is said that Also, in old writings like Korea a dymasty factull (SAYJONG 12year 21 of April), it is said that And in the list of good medicinal stuff analysed after we can find the name of bokbunja. And there is a writing we can presume that bokbunja was cultivated inside the royal palace. JUNGJONG 34year 20 of May is that:
Bokbunja is a sort of winder of a latifoliate tree. Several stems make clumps, spread on all sides, and are covered with white powders. The leaves form an oval shape and have double sawteeth. These flowers bloom in May to June, and the fruits ripen in July to August. The color of the fruits changes from the purple to the black with the time.