In western Washington, okra goes into the garden from late May into early June, weeks after the last spring freeze has passed and the soil has finally warmed. Start seeds indoors a few weeks ahead if you want a head start. East of the Cascades the calendar changes, and this page has no frost dates for that side of the state, so it says so rather than guessing.
The short answer for Washington
Set okra transplants outside in late May to early June, not in March when the frost risk fades. Frost dates mark the outer edges of the growing season, but warmth decides when okra actually starts.
What the frost dates measure
For western Washington, the last spring freeze falls between February 27 and March 18, and the first fall freeze between November 13 and November 30. Both ranges come from NOAA’s 1991-2020 Climate Normals for the Seattle-area reference station. Each is a band where the probability of a 32°F freeze runs between 30 and 70 percent. Inside it, a freeze is neither certain nor ruled out. So these are odds, not promises the weather agrees to keep.
They also describe one place. The reference station sits in the mild, maritime west. Eastern Washington is high desert with a far shorter season, and the Seattle window does not carry over to it.
A mild frost date does not mean an early planting date here. Cold, wet soil and low spring light hold warm-season crops back well past the last freeze, and okra is about as warm-season as vegetables get.
A working calendar
| Stage | Western Washington timing |
|---|---|
| Last spring freeze window | February 27 to March 18 (okra stays out of the ground) |
| Seeds started indoors in pots | April, a few weeks before transplanting |
| Transplants set outside | Late May to early June, once the soil feels warm |
| Main growing and picking | Summer into early fall |
| First fall freeze window | November 13 to November 30 |
The April and late May to June entries are practical judgment, not measured values. Only the freeze windows come from NOAA’s normals.
On paper, the stretch between the two freeze windows is generous, something like eight months. Heat is the scarce part. The reference station averages just 3.0 days a year at or above 90°F, which is a light summer heat load for a crop that thrives in it. Every week of warmth counts, and that is why transplants beat seed sown into cool ground. For the full picture, see Growing Okra in Washington.
What will not work here
Several common okra habits fail on the west side of the state, and each failure traces to a number above.
Sowing seed into March soil
The last-freeze window opens February 27, and that date tempts people to sow early. Don’t. Seed in cold, wet ground sits, rots or sprouts unevenly, and any seedling that survives stalls. Okra gains nothing from the early start, and the one safe choice is to wait.
Counting on the slowest varieties
With only 3.0 days a year at 90°F or more, a long-season, big-framed okra has trouble finishing. It leafs out and grows tall, then starts setting pods as fall light thins and the first freeze (November 13 to November 30) gets close. Varieties that mature quickly fit this climate far better, and The Best Okra to Grow in Washington goes into the choices. A planting made in July has the same problem: less heat, shorter days, not enough runway.
Trusting the region’s rainy reputation
Washington’s rain mostly arrives outside the growing season. The reference station gets about 3.0 inches across June, July and August, out of 39.3 inches for the whole year. July is the driest month at 0.6 inches, with June at 1.45 and August at 0.97. A garden that depends on rain in midsummer is depending on almost nothing.
Soil changes the math. Sandy or gravelly ground drains within the day and can need watering every couple of days in July, while heavy clay holds a rain for a week or more. Deep watering suits okra better than frequent sprinkles. These are 1991-2020 normals for one station, not a forecast, and a slope, a rain shadow or a city lot shifts them. A straight-sided can set out in the bed will tell you what your plot actually receives.
What changes across Washington
Washington is not one garden. The USDA Plant Hardiness Zone Map (2023 edition, built on 1991-2020 normals) runs from zone 4a to 9a across the state. That spread is huge, five full zones, and it means there is no single answer to when to plant okra. The dates on this page belong to the west-side reference city, Seattle, and other parts of the state differ.
Reading the zone spread
The zone system rests on one variable, the average annual extreme minimum temperature. Okra is grown as an annual, so the coldest night of winter matters less to it than the length and warmth of summer, which the zone number does not capture. Still, the spread signals real contrasts. The cold end of the range is mountain and high-interior country, and the mild end is the Puget Sound lowlands and the coast.
A reader in the north, at elevation, or east of the Cascades should shift in a few directions:
- Plant later than the late May to early June window, and let the soil, not the calendar, give the signal.
- Choose the quickest-maturing varieties you can find.
- Consider pots or a bed against a south-facing wall, where heat builds faster than in open ground.
The USDA map is the place to look up your zone. Enter your ZIP code instead of assuming, because zones can change within a few miles of elevation or water.
Where to check this for your own county
A county recommendation beats a state one, and this page is the state one. It rests on a single west-side reference station and a handful of normals. Your county has its own frost dates, elevation, soils and summers.
Your best next stop is Washington State University Extension, which runs county offices across the state. Once there, look for two things.
- The local planting calendar for vegetables in your county, which sets spring and fall dates for your area rather than the Seattle band.
- Variety trial results from nearby, showing which warm-season crops, okra included, have been tried in your county and how they did.
Extension offices also run Master Gardener programs, and local volunteers often know which neighborhoods run cold and which hold heat. If okra isn’t on your county’s list, that tells you something too: it may be a marginal crop for your area, worth trying in a container or a sheltered bed before committing a whole row.
Checking this against your own garden
Your own observations outrank every date here. Three signs cost nothing and tell you more about your microclimate than a statewide table can.
Soil warmth by feel. Push your bare hand a few inches into the bed in the morning. If the soil feels cold and clammy, okra will sulk. A bed that warms days ahead of your neighbor’s is drained, sunny or sheltered, and you can plant it first. A bed that stays cold into June is shaded or holding water.
The first true leaves. After the seed leaves, okra puts out its first true leaves. If seedlings or transplants grow steadily, the spot suits them. If they stall, yellow or sit unchanged for two weeks, nights are still too cool, and a row cover or pot against a wall may help.
The first flower. Okra’s creamy blooms mark the point where the plant has found enough heat. If your plants flower in midsummer, your bed gets what the crop wants. If buds appear only as September light fades, you have a cool spot, and next year’s plan should be a warmer location or a faster variety.
The Moon calendar is a separate, older custom: see when to plant okra by the moon, written as tradition rather than fact.
Common questions
Can I sow okra seed directly outdoors in western Washington?
You can once the soil has truly warmed, around late May, but it is the riskier route. Cool nights slow germination, and the summer has little heat to spare. Transplants started indoors a few weeks earlier give you a safer head start.
Is the last frost date the day to plant okra?
No. In western Washington the last spring freeze lands between February 27 and March 18, and okra goes in two months or more later. Cold, wet soil and low light keep warm-season crops from growing well long after frost risk fades.
Does eastern Washington follow the same calendar?
No. Eastern Washington is high desert with a far shorter season than the west side. This page does not have frost dates for it, so check the planting calendar from your county’s WSU Extension office.
How late can I plant okra?
This page has no verified cutoff date. The first fall freeze window runs November 13 to November 30, but okra needs warmth long before that, and plants set out in July get little heat and shrinking light. Earlier is better.