Grow early, compact, short-season okra, and start it indoors instead of sowing it in the ground. Tall heirlooms bred for long Southern summers mostly give you leaves and frost-killed buds in Wyoming. At roughly 130 frost-free days at 6,000 feet, the length of the season matters more than any variety name. For the wider picture, see Growing Okra in Wyoming.
The short answer for Wyoming
The frost window is where the decision starts. Using NOAA’s 1991-2020 Climate Normals for station USW00024018, the last spring frost falls between May 7 and May 18, and the first fall frost between September 24 and October 5. Those dates mark the 30-70% band of 32F freeze probability. They describe odds, not a guarantee. A freeze after May 18 is still possible, and at higher elevations frost can arrive in any month.
Okra cannot go out on the last frost date, either. It sulks in cold soil, so the real growing season is shorter than the frost-free count suggests. The plant needs to flower and set pods inside that narrowed window, which favors varieties that mature fast.
The decision, by type
Heat is the second factor. The reference station averages only 10.4 days a year at 90F or more, so Wyoming is short on the sustained warmth okra loves. Choose for speed and compactness, and plan to trap warmth.
| Type | Fit in Wyoming | Reason |
|---|---|---|
| Early, compact, short-season types | Best choice | Pods start sooner, and small plants are easy to cover on cold nights |
| Dwarf types in containers | Very good | Pots can be moved to a sheltered wall and heat up faster than the ground |
| Standard spineless types | Workable with transplants | Need a head start indoors and some season extension |
| Tall, late-maturing heirlooms | Poor | Want a long, hot summer that the frost window does not provide |
Names such as Clemson Spineless and Annie Oakley II turn up in many seed catalogs. This page has no Wyoming trial data for any particular variety, so read the days-to-maturity line on the packet and pick the shortest. For timing, see When to Plant Okra in Wyoming.
What will not work here
Direct-sowing okra seed on the last frost date is the classic failure. The May 7 to May 18 window says frost gets unlikely, not that soil is warm. Seed in cool ground sits, rots, or produces stunted seedlings that never catch up. By the time the soil is truly warm, a direct-sown plant has lost weeks it cannot spare.
Slow, tall varieties fail for the same arithmetic. A plant that needs months of heat before it flowers will be hit by the first fall frost, somewhere between September 24 and October 5, with buds still forming. Higher up, that date comes sooner, and frost in any month means a cold snap can finish young transplants in June.
Weekly watering is the next trap, in two directions. Summer rain at the reference station adds up to about 5.8 inches across June, July and August (June 2.16, July 2.11, August 1.52), out of 15.4 inches for the year. August is the driest of the three months just as pods are filling. And rain that arrives as a single thunderstorm tends to run off instead of soaking in, especially after the few hot days that bake the surface. On sandy ground that water vanishes within a day; on clay it can hold for a week. Those are normals for one station, not a forecast for your plot, and a rain gauge on your own ground settles it.
Not everything that sinks okra in the humid South applies here. With so little summer rain, crowding the plants is less a mildew risk than a competition for water and light. Give them room anyway, since shaded, thirsty plants flower late, and late is the one thing Wyoming okra cannot afford.
Finally, skipping season extension does not work. Black plastic over the bed, a row cover or low tunnel on cold nights, and a planting spot against a south-facing wall are the difference between a harvest and a row of leaves. A cool, windy site wastes the plant’s best weeks.
What changes across Wyoming
Wyoming is not one garden. The USDA Plant Hardiness Zone Map (2023 edition, built on 1991-2020 normals) places the state anywhere from zone 3a to zone 6a. That is a wide spread, and no single answer fits it.
The zone is based on one variable, the average annual extreme minimum temperature. It tells you how cold winters get, not how warm summers run. Okra is grown as an annual, so a harsh winter never touches it. What the zone does hint at is how short the season is likely to be, because the colder zones tend to share briefer, cooler growing months.
The frost figures on this page come from a single reference station, and the 130 frost-free days come with a 6,000-foot caveat. Treat them as a midpoint, not a promise. A gardener in a northern valley or at a high elevation should shift everything toward the cautious end:
- Pick the earliest, most compact varieties.
- Lean on containers and wall-warmed beds.
- Cover plants any night frost seems possible, including in summer.
- Expect a lighter harvest, and treat it as a bonus.
Lower, warmer spots get more room to work with, though even they sit at the edge of okra’s range. To find your own zone, look up your ZIP code on the USDA map instead of guessing from a neighbor’s garden. Zones shift over short distances, and the dates here are not a substitute for that lookup.
Where to check this for your own county
This page is the state-level view, and a county recommendation beats a state one. Elevation, slope, wind and the nearest weather station can move your frost dates by weeks within a single county. Averaging that across a state with a zone range of 3a to 6a flattens differences that matter to a crop this marginal.
Your best next stop is University of Wyoming Extension, which runs county offices across the state. When you get there, look for two things in particular:
- A local planting calendar, with frost dates and transplant timing for your area instead of a statewide midpoint.
- Variety trial results from your county or nearby, so you can see what actually produced pods at your elevation.
If okra is not covered, ask the county office what warm-season vegetables of similar demands (peppers, eggplant) do well locally and how local growers extend the season. Their answers will tell you more about your conditions than a statewide average can. Staff also know what kind of soil and wind are typical near you, which this page cannot judge.
Checking this against your own garden
Your own observations outrank every date on this page. Three things are worth watching, and none needs equipment.
Soil warmth by feel. Push your hand a few inches into the bed in the morning. If it feels cool or damp-cold, the soil is not ready, whatever the calendar says. A bed that warms noticeably sooner than another tells you where your sheltered microclimate is: a south-facing wall, raised beds, or ground with good drainage.
The first true leaves. Okra seedlings open a pair of rounded seed leaves first, then the real, lobed leaves. If the true leaves appear steadily, the plant is happy. If growth stalls for a week or more after planting out, the spot is too cold or windy, and a cover or a different location is the fix.
The first flowers. Okra’s hibiscus-like blooms are the signal that pods are coming. Note the date they open each year. Over a few seasons, that date tells you how much your site gains or loses against the averages, and whether a faster variety is worth trying.
Common questions
Can you really grow okra in Wyoming?
Yes, with limits. Choose early, compact varieties, start them indoors, and use season extension. Expect smaller harvests than in the South, especially at higher elevations.
Should I start okra indoors or sow it outside?
Indoors, for most of the state. A head start matters because the frost-free season is about 130 days at 6,000 feet, and okra cannot go out until the soil warms. Transplant carefully, since okra dislikes root disturbance.
Does Wyoming’s summer rain cover okra’s water needs?
Not reliably. The reference station averages about 5.8 inches over June to August, with August the driest at 1.52 inches. Whether that is enough depends on your soil and on how much runs off. Water during dry spells and check with a rain gauge.
Does my hardiness zone decide which okra I grow?
Not directly. Zones reflect winter minimums, and okra is an annual. Season length and summer warmth matter more, so use your zone as a rough hint and your county extension office for the details.