KUSA - Just because the tops have frosted, it doesn't necessarily mean some plants have died. The ground has not yet frozen, so you can still salvage summer bulbs such as cannas, dahlias, gladiolus and pineapple lilies.
They can be dug from flower beds or from pots, although the bulbs may also be left in their pots and stored for the winter.
Cut off the dead top growth and store the bulbs in untied plastic bags. Don't seal the bags or the bulbs may rot. Store in a dark, cool basement room or anywhere where it stays cool but doesn't freeze. Check them every month to make sure they haven't shriveled too much. Throw some water on them if they have.
I make sure to label the bags with the flower color. In April, re-pot the bulbs or prepare to plant them outside in the ground again. Canna rhizomes can be divided with a knife in spring before planting to make new plants.
With a bit of work this fall, you'll save on having to replace these bulbs next year, and get new ones for your trouble.
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