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Can You Grow Sweet Potato in Oregon?

US · USDA Zone 8b · zones 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b

Grows well here

Sweet potatoes grow well here — they love the warm season your zone provides.

Plant zones

5a–11b

Oregon last frost

late January

Oregon first frost

mid-December

Days to harvest

90–120 days

When to plant Sweet Potatoes in Oregon

Direct sow

Jan 30

Harvest

Apr 30 – May 30

Dates are approximate, based on Oregon'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 Oregon

Oregon has dramatically different climates west and east of the Cascades. The Willamette Valley is mild and productive year-round (Zone 8a-8b); eastern Oregon is semi-arid and colder (Zone 5-6).