I don't know that it reseeded. I wonder if it just hunkered down during the drought and popped back when conditions were more hospitable. I brought quite a few plants back from a swap a couple of yrs ago. It may have been in those, but I know I didn't buy one. We've had a lot of rain the last couple of months. I have bulbs coming up that I didn't see last spring and thought I'd lost to the freeze.
