Checked a USDA map, I'll have to find myself one of these!

Length of bloom?

We have two here In Hamilton Square Perennial Garden (9b). They bloom for about three weeks in Sept./Oct. Can be a bit floppy if given too much water. There a great spot of color when little else is blooming. It is quite a show in the 'First Light' of the day during the bloom. Thanks Wes.

Thanks for the info! Our Fall bloom is somewhat dismal without effort, I've had good luck with Montauk Daisies bringing late color. Most mums here are of the non-hardy variety and I like having something different, preferably perennials so the willow leaf sunflower looks like a great choice!