Light frosts only harm blooms, but hard freezes can kill mum roots. Use mulch, covers, or shelter for protection; wait until spring to prune. Choose hardy mums for outdoor planting—florist mums need ...

A light frost in the fall can cause the buds and flowers of a mum to wilt. Covering potted or garden mums with cardboard boxes or fabric at night will help protect them from damage. Garden mums should ...