The Korea Ginseng Corporation (KGC) has developed six varieties of ginseng called Gumpoong, Sunun, Sunpoong, Sunone, Chengsun, and Sunhyang. Gumpoong shows no purple stem in the aerial section and the color of its berries and autumn leaves are distinctively yellow. In the testing of 4-yr old specimens in 2002, the proportions of the below ground roots that were rusty colored for Gumpoong was 1.29 in Daejeon and 1.45 in Eumseong; whereas the proportions for its yellow berry variant landrace were 2.60 and 2.45 in the two regions, respectively.