Soba (buckwheat) is an annual polygonaceous plant grown not only in Japan but also in inland areas of Asia, East Europe, Central Europe, Northern Europe, mountainous regions of Southern Europe, South and North America and some other areas for food.
ソバはタデ科の一年草で、日本のみならず、アジア内陸地帯、東欧、中欧、北欧、南欧山岳地帯、南北アメリカ他で栽培され、食用とされる。