Question: flowers that are frost resistant?
Answer: Calendula. The coin-like, bright yellow or golden flowers of calendula are always a reminder that spring has finally sprung. ... 
Osteospermum. Boost the color in your early spring or fall garden with osteospermum. ... 
Pansy. Talk about irresistible! ... 
Dianthus. ... 
Petunia. ... 
Swiss Chard. ... 
Flowering Kale. ... 
Dusty Miller.