Posted: 28/09/2014 at 16:02
I have other tiny potatoes that I left in the pot, and they just went green, just as they normally do. I've grown spuds for years, never had any go purple, and never had any with green shoots coming out of them. Also the stem is not like spuds stems, much thinner.
I just been looking online and there are actually purple sugar beets, I didn't know this! But, those grow one per stem.. so.. still not sure.