Wintering Canna Bulbs in the Ground
by Ernest Posner
I have a 14 ft by 2 ft border of canna in soil near the shore in New Jersey. They are about 7 ft tall.
Do you have any suggestions for prepping them to survive the winter short of removing the rizomes from the ground?
Thanks, Ernie Posner Botanical Journeys Plant Guides
Canna tubers can only be wintered in the ground in dry winter climates where the ground does not freeze.The combination of cold and wet soil will cause the tubers to rot.
The bulbs grow and bloom best when they are lifted and stored each year, even in warm climates.
This is because lifting the bulbs allows you to refresh the soil in the planting bed by digging in rich compost and fertilizer. Canna lilies are heavy feeders and they respond well to the extra nutrients this growing method provides.
Also, by lifting the bulbs, you will be protecting them from any tunneling insects or animals that might otherwise nibble on them.
You'll find instructions for wintering Canna bulbs