I know that slips are usually retrieved from a sprouted tuber. I have dug up and potted some sweet potatoes that didn't have
enough time to finish this last year. I was even surprised to find them when I was clearing out the garden for fall! they are some variety that is white I think. I can't remember the details, the slips were given to me. it appears to be quite happy in the house. even though I chopped off some longer vines and just stuck them in the pot. a few brown leaves but they seem to have already rooted themselves.
I am assuming that cuttings in the spring will serve the same purpose as slips. am I wrong? is there some growth hormone type reason why it needs to actually come off the tuber or something like that???