The ratio of Hon-kudzu-ko made in China to that coming onto the domestic market has risen recently due to the decreases domestic production of Hon-kudzu-ko, which has been caused by the aging of the experts who dig out the root of the kudzu vine, as well as by the decreasing amount of natural kudzu vine.
本葛粉の生産はクズの根を掘り出す人の高齢化と天然資源の減少によって、現在、国内で出回る本葛粉にしめる中国製の割合が高まっている。