Last year I tried my hand growing sweet potatoes. I had them growing in three large "potato" bags. Most of what I harvested in the fall were very small, way too small to really do anything with them. I only had a handful that were large enough to bake. Perhaps I planted them too late. All these potatoes have been stored on my enclosed porch since they were dug up. They all still have a bit of dirt on them but I see no growth/sprouting on any of them.
Is there a way that I can plant those small ones? Some of these are 4-6" long and about the thickness of an average size thumb. I would like to try to grow sweet potatoes at least one more time, just to see if earlier planting will produce a larger-size crop.
Any advice would be helpful.