It might also have something to do with the type of flower...
For me, all the compact, tiny button, poof-ball types (I think they might call them pom-pom) tend to look nice very briefly and then crap out, even when they are not greenhouse grown, simply because they bloom all at once *and* the flowers don't last very long--literally about 10 days max for me.
Whereas with most of the daisy types and even many of the larger flowered decorative types, the flowers last longer and they tend to stagger their bloom better.
For example, the driveway whities posted above--those pics were taken 10-7, 10-10. They started blooming around the end of September. Here they are now, after prolonged drought, wicked wind, and frost--aging pink, and still technically opening a few new blooms
They don't look great by any means, but practically speaking they do look better than my button mums which have been all brown for a while now.
I am really admiring this one now, which is going gonzo in the sun
I threw a tiny piece in a shady spot last fall, just to see if it could be tamed a little
well, a little I guess, and it sure brightens up that shady hole