One of my favorite August/September bloom is the Cardinal Flower/Giant Lobelia
. It is a perennial, and feeds hummingbirds. I love
more than petunias for late summer blooms. They grow and bloom better here. Last year I dug up my first Dahlias, hopefully they are okay when it comes to storage here.
A late summer bloom I would love to try is Surprise lilies with their showy beauty.