Crocosmia and Potatoes

I only got outside for an hour or so today so I finished weeding the bed I started yesterday and started on another one. This again was full of grass and horsetail, which didn't surprise me but I also found two types of tiny potatoes and some Crocosmia bulbs. It flowered last summer, but I don't remember planting it. I think the potatoes came from a bag or two that were forgotten in a press which I threw in there when they started growing.