Home › Sweet Potato › Grow in Newfoundland and Labrador

Can You Grow Sweet Potato in Newfoundland and Labrador?

Canada · Canadian Zone 4 · zones 1, 2, 3, 4, 5

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

Newfoundland and Labrador last frost

early May

Newfoundland and Labrador first frost

early October

Days to harvest

90–120 days

When to plant Sweet Potatoes in Newfoundland and Labrador

Direct sow

May 1

Harvest

Jul 30 – Aug 29

Dates are approximate, based on Newfoundland and Labrador'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 Newfoundland and Labrador

Newfoundland has a subarctic to cool maritime climate. The island is Zone 4b-5b near the coast; Labrador is Zone 1-3. Short growing seasons but excellent for cold-hardy crops, root vegetables, and berries.