Overwintering Canna Lilies in France (Poitou-Charentes)

Overwintering Canna Lilies in France (Poitou-Charentes)

With winter lows rarely below 0°C (Zone 7 equivalent), cannas can stay in the ground if soil drains well.

Steps

1. Allow frost to kill foliage; cut back to ground.
2. Cover with 20 cm (8 inches) of dry straw.
3. Ensure soil doesn’t stay soggy—amend with composted manure if needed.
4. Feed with bone meal in spring.

Wet, cold soil rots rhizomes; good drainage is key.