USDA Zone 13 planting calendar
When to plant okra in USDA zone 13
Sowing, transplant, and harvest dates calibrated to zone 13's 365-day season (Hawaii (coastal lowlands), Puerto Rico (south coast)).
Key dates for okra in zone 13
| Stage | When | Anchor |
|---|---|---|
| Plant outdoors | year-round (avoid the hottest 6-8 weeks of summer for heat-sensitive varieties) | No frost — plant in the cool months |
| First harvest (estimate) | ~60 days after planting | ~60 days from sow |
Dates are zone-wide averages. Local microclimates (south-facing slopes, urban heat, lakeside warmth, elevation) can shift the planting window by 1-2 weeks within the same zone.
Why this timing works for zone 13
Zone 13 has average annual minimum temperatures of 60 to 70°F and a 365-day frost-free window from no frost to no frost. Okra are tender — they need soil above 16 °C to grow and stop fruiting once nights drop below 10 °C. That puts the safe outdoor planting window after the last spring frost passes, and the harvest closes when fall temperatures arrive.
Okra is a heat-loving crop that stalls in cool weather — direct-sow or transplant after the last frost when soil temperature reaches 21 °C (70 °F), or pod set is poor. In zones 6-7, starting seeds 3-4 weeks indoors (in biodegradable pots to avoid tap-root disturbance) extends the season enough to reach full production. Soak seeds 12-24 hours before sowing to improve germination, and nick the hard seed coat if germination is slow.
Quick-grow guide
- Sun: Full sun — 6-8 hours direct.
- Soil temperature for germination: 21-35 °C (70-95 °F).
- Spacing: 12-18 inches (30-45 cm) between plants.
- Days to harvest from direct sow: ~60 days.
- Wait until night temperatures stay above 10 °C — cold soil stunts warm-season crops permanently.
Common mistakes — zone 13 × okra
- Planting in midsummer: zone 13's July-August heat shuts down fruit set — run a spring crop (transplant by year-round (avoid the hottest 6-8 weeks of summer for heat-sensitive varieties)) and a fall crop instead.
- Choosing cold-zone varieties — pick heat-tolerant cultivars (Solar Fire, Heatwave II for tomatoes; Carolina Reaper-tolerant heritage peppers) bred for zone 13.
Source and methodology
Frost-date averages from NOAA Climate Data Online within each USDA hardiness zone. Hardiness zone boundaries from the USDA Plant Hardiness Zone Map (2023). Crop timing offsets calibrated against US Cooperative Extension Service publications (UNL, UMN, NC State, Texas A&M, UF/IFAS) and cross-checked against the RHS sowing calendar for en-GB readers. Curated by the Growli editorial team.
Keep going
- How to grow okra — full guide
- USDA Zone 13 — frost dates and what else to plant
- All 13 USDA hardiness zones