Cannas in Boise, ID: Must Lift for Winter (Zone 6)

Boise (Zone 6) is too cold for in-ground cannas. They must be lifted.

Lift & Store Protocol

1. After frost kills tops, cut stems to 4–6 inches.
2. Dig with fork; shake off soil — DO NOT WASH (water = rot).
3. Air-dry 1–2 days in shade.
4. Store in cardboard boxes with peat, vermiculite, or wood shavings.
5. Cool (40–50°F), dark, dry basement or crawl space.
6. Check monthly; discard any mushy rhizomes.

Spring Replant

Wait until soil is 65–70°F (usually late May in Boise). Plant 4–6 inches deep, eyes up. Water sparingly until growth appears.

Divide every 2–3 years — each section needs at least 2–3 eyes. Cannas multiply fast; you'll have plenty to share.