Base choices by your climate zone. Warmer climates give you more choices. Some flowers are planted in spring or summer for fall blooming. Any areas dropping below freezing temperatures would not work in fall. Frost will kill the plants.
6 months ago
Last edited at 5:39PM on 9/24/2013
I'm guessing whatever you want to bloom in the spring might be what can be planted in the fall just as long as your ground doesn't freeze. What about tulips, daffodils, and lilies? Just checked a chart on this. Peonies are best planted in the fall, and some others too. See chart: http://www.paradisegarden.com/shop/fallguide.php