Possibly weird question

[Jilly_in_VA]

I have a deck garden (we're afflicted with black walnuts, so limited in what we can grow in the rund) and last year I had, as usual, sonm hanging baskets of calibrachoa (million bells). Since it's a microclima, these sometimes reseed and sprout new ones, as do petunias when I have those, but this year I got a surprise, In the basket where my million bells had been, I got not one, but several johnny jump-ups! What the heck? Are they related, or did these just blow in from somewhere? I transp;anted them, because I wanted the pot for more million bells, but good grief! If it had been one, that would have been one thing, but five of the darn things.....?!