On the farm where I grew up the uppermost greenhouse on the west side got sun from about midday onward. And there was a whole row of it maybe 30-40 ft long.
My mother would tell me to go up and pull some roots and always from the middle of the plant, wash them off by the faucet at the end of that greenhouse and bring them down to the house.
She would have clamped that grinder to the kitchen table,I knew what came next. As I turned the crank just a few tears would start and then I'd be in full mode crying.
I don't even remember what she used it for, I wouldn't eat it,and she said that the leaves tasted good,whatever that means as well.
Her mother was Swedish, my grandmother,she was Hedwig in Sweden near Uppsala, but was called Hattie after immigrating to the US with the rest of the Carlsons in her family , I just called her grandma.
Mom once wrote out some recipes on index cards,I still have them and maybe there's even a card for horseradish something or other.
Carolyn