Sweet potato propagation

I always had trouble getting sweet potato slips started early enough.  A couple years ago I  discovered that it can work better to use sweet potatoes that are a little over a year old to produce slips. The variety that I have is random from the grocery store.  I store them in a dry, fairly dark, heated basement. They are only good enough to eat until early the first spring, but they will still have shoots the next year.

Consider overwintering a sweet potato in the house....   just cut the long vines into pieces for slips. I have done this a number of times.

Thanks Ken - as I live in cool climate Australia, I too struggle to get them going in time for our short growing season. I'll try planning a year ahead this time and purchase some ready for propagating when they are a year or so old.