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Can You Grow Sweet Potato in Quebec?

Canada · Canadian Zone 4 · zones 2, 3, 4, 5, 6

Won't grow here

Sweet potatoes need a long warm season (90+ frost-free days above 18°C) this zone cannot reliably provide.

Plant zones

5a–11b

Quebec last frost

early May

Quebec first frost

early October

Days to harvest

90–120 days

When to plant Sweet Potatoes in Quebec

Direct sow

May 1

Harvest

Jul 30 – Aug 29

Dates are approximate, based on Quebec's average frost dates. Your exact yard may vary by microclimate.

About Sweet Potato

Sweet potatoes need a long warm season and thrive in heat — they are a subtropical crop at heart.

Plant slips (rooted cuttings) after soil warms to 18°C. They sprawl — give them space or train vertically. Cure harvested tubers at 30°C for a week to develop sweetness and improve storage.

Full sweet potato growing guide →

Gardening in Quebec

Quebec ranges from Zone 2 in the far north to Zone 6 near Montreal. Montreal is Zone 5b-6a with a 6-month growing season. French-Canadian gardening tradition runs deep — a wide range of vegetables and fruits succeed.