Last winter, there were two African Violets in a batch of plants given to me. I didn't figure they would live, and I didn't take very special African-violet care of them. In Spring I put them out in the yard with other plants, in a shady place where they could be watered easily.
I was sometimes careful to put the water on the dirt and not the leaves, but they were outside and sometimes getting some sprinkler water and rain (not much rain this summer).
Then one day in late September there was a bloom!
It lasted several weeks.
I know the leaves look terrible. They had too much sun and too much water. (They greened up after a few weeks in the kitchen.)
So African violets aren't local, but this one came to my house and bloomed.