Florist mums can't survive cold weather. Garden, or hardy mums, on the other hand, can survive cold better. Some cultivars are less hardy than others and can be killed by an early spring frost. ... For potted mums, cut off the flowers after they wilt, to encourage further blooming.
Will mums survive a frost?
Most garden mums should be able to endure a light fall frost. Cover the plants at night when freeze warnings are in effect. ... However, if you are in a cold climate, leaving the dead foliage on the plants has been found to help the plant survive colder temperatures better than pruned plants.
Can potted mums withstand frost?
Mums do not respond well to frosts and freezes, which may not occur until December or January in warmer areas. Garden or hardy perennial mums usually will weather the storm and leaf back out the following spring, but pot mums are generally finished.