I was watching some videos on gardening, and was wondering how often a sunchoke will look like a ginger root system (a giant clump of one tuber).
Many of mine looked like that. Though some were a lot smaller, and I suspect these tiny ones are the ones you miss that let the patch grow again. On the other hand I did a second look a few days after removing all the sunchokes I could find, and still found several large ones!
I think it must be common.