Incoolclimatesyou have togrowtropicalplantsunderglass.
If you have agreenhouse, it's a goodideato overwinterrootcuttingsunderglass.
Because they had such ashortgrowingseason, theygrewmost oftheirvegetablesunderglass.
You canstarttheseedsunderglassorindoors, if you haveadequatespaceandlight.
Overwinteryourpottedrhizomesunderglassandplantthem out in thespring.