The firebush, a favorite of hummingbirds, dies back after a heavy frost and then grows so rapidly starting in spring that by summer, it's a thick, hearty bush covered with blooms. If you prefer, you can cut it back in late fall.
The bush blooms continuously, producing vivid orange and yellow blossoms. If you plant it, don't do what I did - hem it in. Give it plenty of space and it'll easily become a focal point.
By the way - I've never fertilized and only occasionally water the firebush. It's that hearty when established.