I don't know where you are but at this point if it happened to one of mine I would expect it to be up and blooming again nicely by the end of summer. I think you will likely have very nice tubers from this. IT may also kick it into tuber making as a survival method!

Thanks for the encouraging. I live in Bulgaria and the summer is ust starting now, it was raining heavily the past month. By the way, do I have to water my plants because it as already in the 100s now and this is my first year growing dahlias?

Kalina