>>960316Yes - plants like ginger can regrow from parts of the tuber.
Pic related is an image of 3 kale plants that I grew from the stumps of store-bought kale bunches.
Many plants will regrow from the stumps/roots, but a lot of plants like lettuce and possibly bok choy will simply grow roots then go right to seed, making them useless for eating.
The only ones I have had success with are Kale and members of the allium family (onions, garlic, leeks, shallots).