What if the flowers are frostbitten?

Pruning: pruning the frostbitten branches, pay attention to starting directly from the root of the plant, and wrap the flower plant with plastic film after pruning to avoid frostbite again. Keep warm: wrap the flower plant with waste cloth or sponge, then wrap it again with plastic wrap, fix it, and finally put the plant in a dark, wet place so that it can absorb enough water, which helps it recover.