There is no single planting date for growing turnips in Nevada. The state runs from low desert to high mountain valleys, and the USDA Plant Hardiness Zone Map (2023 edition) spans zones 4a to 10a across it. Turnips and rutabaga want cool air and workable soil, so the calendar slides by months with elevation. Your county extension office holds the local dates. The sections below show how to read the few numbers that exist.
When the soil is warm enough in Nevada
The one frost figure this page can source comes from the place where it misleads most: Las Vegas airport. NOAA’s 1991-2020 U.S. Climate Normals put the last spring 32°F freeze there between January 7 and February 1 (the 30-70% probability band, station USW00023169). Treat that as a curiosity, not a planting window. Las Vegas is a desert urban heat island, and Reno, Carson City and every valley at elevation freeze months later in spring.
Those dates are probabilities, not promises, and the same goes for any frost date you find for your own town.
Frost is also only a proxy. Turnips and rutabaga don’t care about the last freeze itself. They care about soil, and soil warms after the frost risk ends, not alongside it. A bed can be frost-free by the calendar and still be cold and wet at root depth. By the time it has swung the other way, into hot and drying, a spring sowing is racing a clock it can’t win.
That is why this is mostly an autumn crop in Nevada. Roots sized up in cooling weather come out tender and mild. Roots sized up in rising heat turn woody, strong-flavored and quick to bolt. Early spring sowing can work where the ground thaws early enough, but the window is short.
What to check instead of the date
A cheap soil thermometer settles the question better than any almanac. Push it a couple of inches into the bed in the morning, when the reading is lowest, and watch the trend over several days rather than one reading. For a fall crop the logic runs in reverse: you sow while the soil is still warm enough to germinate seed quickly, and let the shortening days and cool nights do the rest.
Two points about types. Quick, small-rooted turnips grown for salads or greens finish fast and suit both ends of the season. Rutabaga is the slow one, bred for a long cool stretch, and it pays for any delay. Varieties that have been trialled for Nevada conditions are listed by University of Nevada, Reno Extension, and this page names none of them on purpose. For the broader crop picture, see Growing Turnips and Rutabaga: An Autumn Crop, Sweetened by Frost.
How long the season lasts here
The same Las Vegas airport normals give a first fall freeze between December 8 and December 23. Set that against the spring band and the frost-free stretch there runs from roughly 310 days (February 1 to December 8) to roughly 350 days (January 7 to December 23). It is an almost year-round window, and it belongs to one hot, paved corner of the state.
Nobody in Reno, Carson City or the high valleys can borrow it. Their fall frosts come months earlier and their spring frosts months later, and this page has no sourced dates for those places, so it won’t estimate them. Look up your own station’s normals through your county extension office, then do the same subtraction yourself.
What matters is what the number allows. A long window, like the low desert’s, allows a second sowing: a spring planting that is harvested before heat arrives, then a fall planting timed to cooling weather. Staggering sowings every couple of weeks stretches the harvest instead of delivering it all at once. Our succession sowing guide on this site covers the spacing.
A short window changes the math completely. With one sowing and no second chance, the first sowing is the only sowing, and it has to land in the right slot. Transplanting also stops being clever. Turnips and rutabaga form a taproot, and a disturbed root forks and stunts. In a long season you can afford a failed transplant and reseed. In a short one, direct sowing is the safer default, and the root check (looking for a bent or broken taproot before you plant) only matters if you had to transplant at all.
For comparison, a high-elevation state with a similar short-window problem is covered in Growing Turnips and Rutabaga in Wyoming, and a long, humid one in Growing Turnips and Rutabaga in Tennessee. Nevada has both situations inside its borders.
Heat and water in Nevada
This page can’t give you a verified count of days above 90°F or a summer rainfall total, because neither figure was available for the sources used here, and guessing would be worse than leaving the gap. What can be said honestly is the shape of it. Nevada summers are hot at low elevation and dry nearly everywhere, so summer rain won’t do your watering for you. Heat is a problem for germination and tender seedlings, and water has to come from you.
That is a different problem from the humid South. A cool, damp summer brings mildew, slow ripening and root disease. A dry one brings cracked roots and bitter, pithy flesh when watering swings between drought and soaking. Steady moisture matters more than volume. Drip lines or soaker hoses beat overhead sprinklers, which also keep the foliage dry. A layer of mulch evens out the swings.
The two cold facts decide the back half of the season. The first is the coldest month. At the Las Vegas reference station, the mean daily minimum of the coldest month is 39.6°F (NOAA NCEI Climate Normals 1991-2020). That is an average low, not a record, and it describes a place where the ground essentially never freezes hard. There, roots can stay in the bed and be pulled as needed. In the zone 4a parts of the state the ground does freeze hard, and roots must be lifted before that and stored, or left under a deep mulch only if you can still get a fork into the soil.
The second fact is the winter low, which decides how much frost sweetening you get. Cold nights push roots to convert starch to sugar, and a crop that never sees a frost stays blander. A Las Vegas fall will sweeten little. A high valley may sweeten well, right up to the point where the ground locks.
Storage is a food-safety matter, so the advice is about inspection, not a timetable. Lift roots on a dry day, trim the tops, and check every one. A soft patch, a weeping spot or a moldy crown ends the question: that root goes to the compost, not the kitchen. A root that looks firm and clean can still be on its way down, so check stored roots again and often.
Which turnips and rutabaga suit Nevada
This page names no cultivars, and that is deliberate. Nevada contains deserts and mountains, and a variety that thrives in a Reno-area garden can fail in Pahrump. The only recommendation that means anything is one from local trials, and this page doesn’t have them. University of Nevada, Reno Extension and your county office do. Ask them which varieties they’ve seen perform nearby, and take their word over a seed catalog’s.
What can be done here is reason by type. Where the season is short, favor the earliest types: small-rooted salad turnips that mature quickly, and greens-type turnips grown mainly for their tops. Rutabaga needs a longer cool run to size up, so it suits you only if your fall is cool and long enough to deliver it. Where heat is the pressure, choose types that tolerate it and give the roots airflow and a little afternoon shade, using shade cloth or a taller crop on the west side. Wide spacing helps for the same reason.
Humidity matters less across much of Nevada, but irrigated beds create their own damp pockets. If your garden stays wet, put disease resistance first on the seed packet, ahead of flavor or root shape.
One rule applies to every pest and disease question. Turnips and rutabaga are brassicas, and they share their troubles with cabbage, kale and mustard, including flea beetles, root maggots and clubroot. Rotate them away from that whole family, because a gardener who moves turnips into last year’s cabbage bed has rotated nothing. Our rotation page on this site explains the cycle. For controls, ask extension about practices such as row cover and clean-up before reaching for any product.
Common questions
Can I use the Las Vegas frost dates for my Nevada garden?
Only if you garden near the Las Vegas airport. Those dates reflect a desert urban heat island, and Reno, Carson City and anywhere at elevation freeze earlier in fall and later in spring. Ask your county extension office for the normals at the nearest station.
Is fall or spring better for turnips in Nevada?
Fall is the safer bet across most of the state, since roots mature in cooling weather and sweeten with frost. Spring sowing works only where the ground thaws early enough to finish before summer heat.
Can I leave rutabaga in the ground over winter?
It depends on how hard your ground freezes. Where the coldest month stays mild, as at the Las Vegas reference station with a mean daily minimum of 39.6°F, roots can stay put. In colder zones, lift them before the ground locks up, and discard anything soft, weeping or moldy.
Are turnips safe to plant where I grew cabbage last year?
Not if you can avoid it. Turnips and rutabaga are brassicas, like cabbage, kale and mustard, and they share pests and diseases. Plant them in a bed that hasn’t held any brassica for several seasons.