When to plant okra in USDA Zone 4b

Plan your okra planting around local frost risk and soil temperature, then work backward from the harvest week your buyers need. The calendar below is a starting point, not a field-level weather forecast.

Minneapolis, Duluth, central WI, northern VT/NH. Average last spring frost May 15, first fall frost September 22 — a 130-day frost-free season.

Zone fit: good
Okra is frost-tender, so timing the outdoor transplant to the last frost matters more here than in warmer zones. Row cover buys 2 weeks of head start.

Key dates

Direct-seed outdoors
May 29 – June 19
Expected first harvest
August 4 – September 1

Windows are calculated from your zone's average frost dates. Adjust ±1 week for microclimates, elevation, and your own frost records.

Spacing and soil

Plant spacing
12″
Row spacing
36″
Seed depth
1″
Soil temperature
75–95°F
Frost tolerance
tender
Days to harvest
60 days

Grower notes for Zone 4b

Soak seed overnight to speed germination. Harvest pods at 3–4 inches every other day or they turn woody.

Plant near: peppers, basil

Other cucurbits for Zone 4b

Same crop, other zones

Track your own plantings

BAU Farm Intelligence turns these windows into per-field tasks — indoor seed-start reminders, transplant dates, harvest projections — using your farm's actual frost history.