GRAINS & TEA
Konjac production by prefecture
Gunma Prefecture grows or catches the most konjac in Japan: 49,700 t, 96.7% of the national total. Next come Ibaraki Prefecture and Tochigi Prefecture. This survey covers the main producing prefectures only; prefectures not listed were not surveyed.
Source: MAFF, Crop Statistics Survey / Marine Fishery Production Statistics (e-Stat, 2024 final). Aquaculture counts harvested output.
Q&A
Common questions
Which prefecture produces the most konjac in Japan?
Gunma Prefecture, with 49,700 t (96.7% of the national total) in 2024, according to Japan's Ministry of Agriculture.