What’s this plant called?

[Barb]

It's a Petunia!  See if Felder agrees.
Barb

[Ron Sower]

...the leaves look fuzzy in this pic...looked glossy in other one....

[LizStreithorst]

The leaves are smooth but I think that the ones just under the flower are fuzzy.

Barb, I think think you're right.  It's some kind of old variety of petunia.  I can't imagine where it came from.  It just started growing in a place that needs something pretty growing.  The foliage is beautiful even though the flower is not as impressive as a hybrid petunia.  I bet it's hardier, too.

I sent the pic to Felder.  I bet he will know the common name of this variety.

[LizStreithorst]

I just talked to Felder.  I told him to email me the Latin name. We were right, Barb.  It is a cross between Mexican petunia and normal petunia.  A few years ago I planted both.  The normal petunia died but it must hat been pollinated by the Mexican petunia.  Felder said that he seeds of these will last for years until they find the situation good enough to sprout.  He told he how to save the seeds do I could have more of them next year.  He said that it was one of his favorites.  It's my current favorite, too because it's so pretty and it came up on it's own without me doing anything.

He said that it would die down in the summer and the seeds will sprout in the winter, same as collards or mustard greens.  Like normal Petunias it doesn't like hot weather.  I know that it's silly but I'm very much attached to this plant.

[Barb]

Your new pretty plant is a  volunteer petunia.  I get lots of volunteers, free plants, and usually very hardy as opposed to the same from a nursery where they were started in different conditions than my yard.  I love my volunteers.
Barb