Chrysanthemums are at the heart of many fall displays in New England, USA, where I live. What would we do without them? Learn how to grow them and what the difference is between hardy mums and florist mums: http://landscaping.about.com/od/landscapecolor/p/chrysanthemums.htm
Will Hardy Mums Be Part of Your Fall Display This Year?
Fall Garden Mums. Hardy or No?: Daisy Type Garden Mum. these are winter hardy, and perennial, but cheap and easy to use as fall annuals since they only bloom late summer as perennials if you don't disbud them.