This beautiful little native plant popped up as a weed in my garden. (Pic taken in early May last year.) It is a hardy perennial — it must have survived the harsh winter by saving all of its energy in its roots, and then reemerging in the spring, after the danger of frost had past.
This is a North Dakota native stonecrop (a relative to succulents). There are hundreds of species in North America, so I can’t say for sure which one this is, but it looks like Sedum spectabile to me. This local press in Yankton has an a little more info on these species.
This particular individual is the Sedum plant that I potted up and brought indoors, which was flowering on an icy winter morning.