Panax japonicus is a species of ginseng known for its bamboo-shaped, uneven-sized roots.

[2][3] It is found throughout Japan and Korea,[1] and is also said to be endangered in China.

[4] P. japonicus sees some use in Japanese Kampo medicine[5][6] and traditional Chinese medicine.

[7] There is no English-language literature on its cultivation, though Baeg et al. (2013) lists it among cultivated ginseng species.

[2] There is, however, a considerable volume of Chinese literature on its cultivation.