Not really. Edible flowers can be frozen, and will look just fine as long as they stay frozen. However, as soon as they thaw (and they’ll thaw out very quickly) they’ll turn limp and their colors will darken. You’ll lose the beauty that you bought them for in the first place.

Here’s an example using edible snapdragons, edible pansies, and the microflower blend:

Fresh:

Thawed:

The one notable exception is Szechuan buttons, which will darken and go somewhat limp, but will keep their mouth tingling effect intact. In fact, in our test it may have even gotten stronger.  Some chefs use them as an ingredient in ice creams and sorbets!