When to plant sweet potato in zone 7b — planting calendar

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Showing USDA Zone 7B

Growing SeasonZone 7b

Last frost ~Apr 5First frost ~Nov 1Today

Start indoorsTransplant / sowHarvestFrost risk

APRMAYJUNJULAUG

Transplant Apr 26 · First harvest Jul 25 · Wrap by Aug 15

Last spring frostApr 5

Transplant outApr 26

First harvestJul 25

Last harvestAug 15

First fall frostNov 1

Why these dates work in zone 7b

Zone 7b's last spring frost averages Apr 5 and first fall frost Nov 1 — about 210 frost-free days. Sweet Potato is frost-sensitive, so the 3w after frost timing builds in a safety margin against a late cold snap — setting plants out too early risks losing them to frost.

Common questions

How long does sweet potato take to grow in zone 7b?

Sweet Potato matures in about 90–120 days from transplanting. In zone 7b that means setting plants out around Apr 26 and first picking around Jul 25.

Will sweet potato survive frost in zone 7b?

No — sweet potato is frost-sensitive. In zone 7b, wait until after the last frost (around Apr 5) to plant, and harvest before the first fall frost (around Nov 1).

For soil, spacing, pests and companion planting, see the full sweet potato growing guide →