Ginseng is found in North America and in eastern Asia ( mostly Korea , northeast China , Bhutan , eastern Siberia ) , typically in cooler climates . `` Panax vietnamensis '' , discovered in Vietnam , is the southernmost ginseng known .
They grow in the Northern Hemisphere in eastern Asia ( mostly northern China , Korea , and eastern Siberia ) , typically in cooler climates ; `` Panax vietnamensis '' , discovered in Vietnam , is the southernmost ginseng found .