When Are Sweet Potatoes Ready to Dig?
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GardenSays
Sweet potatoes are ready when harvest before the first fall frost — in Minneapolis, MN, typically Aug 3 – Sep 16.
- Ready when
- harvest before the first fall frost
- Days to maturity
- 90-120
- Est. first harvest
- Aug 3 – Sep 16
Ready when: harvest before the first fall frost — a hard frost damages the roots in the ground. Dig carefully with a garden fork well away from the crown to avoid piercing the roots; handle gently, they bruise easily.
Do this this week
- 1.Nothing to check yet — first harvest typically starts Aug 3 here
- 2.When the season opens, watch for: harvest before the first fall frost
Typical estimate · 1 verified source · Checked 2026-07-18 · How we decide
Why
On the calendar: planting on schedule in Minneapolis, MN puts first harvest around Aug 3 – Sep 16 (our estimate from the typical planting window plus 90-120 days to maturity). Weather, variety and care shift this by weeks — trust the sign above over the date.
After lifting: cure at 80-85F and high humidity for about a week to heal cuts and sweeten the roots, then store cooler. Storage: after curing, store cool (55-60F) and dry — do NOT refrigerate raw sweet potatoes.
- Days-to-maturity figures are averages from trial conditions — your season, variety and weather move them, which is why the visual readiness sign is the deciding test.
When this doesn't apply
- If you planted earlier or later than the typical window, shift the estimated dates by the same amount.
How this was calculated
- 1. Planting windowMay 5 – May 19Calculated result
Sweet potato goes in on the same schedule the Planting calculator gives for Minneapolis, MN
- 2. Days to maturity90-120 daysSource guidance
90-120 days from planting slips (Clemson Cooperative Extension — Home & Garden Information Center: Sweetpotatoes)
- 3. Estimated first-harvest windowAug 3 – Sep 16GardenSays estimate
Planting window + days to maturity — an estimate; the readiness sign always wins
Data sources
- Clemson Cooperative Extension — Home & Garden Information Center: Sweetpotatoes — About 90-120 days to harvest; harvest before frost; cure before storage. (checked 2026-07-18)
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People also ask
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