Global Warming?

That's what I thought at first, because these hibiscus (found on a random Topeka street corner) are way too big and pretty to be annuals that have been thrown in the beds for just a season. Seriously--they're as big as dinner plates.

But I looked it up and these ("Pyrenees Pink", perhaps?) are definitely hardy to zone 5. What's more, this gorgeous red "Fireball" would live here as well.

Now, where to put where to put it?