Generally — Most Areas
California poppy (zones 6-10) suits most of Nevada (4a-10a) — zones 6-10 are in range, and the rest of the state is the exception.
California Poppy in Nevada — the short answer
California Poppy in Nevada: hardy in zones 6–10, full sun, against a state median of ~163 frost-free days.
- Plant zones
- 6-10
- Manual horticultural correction (source not retained); NC State Extension and Missouri Botanical Garden, with the remaining rows from other published sources or Growable Ground compilation
- Nevada zones
- 4a-10a
- USDA PHZM 2023
- Frost window
- Apr 28 - May 20 – Oct 9 - Oct 21
- NOAA RCC ACIS 1991-2020, 28°F
- Shortest county season
- 110 days
- NOAA Regional Climate Centers ACIS, 1991-2020, county 28°F killing freeze
- Days to maturity
- 60 days
- Growable Ground Plant Database
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — per-field provenance varies and is published with the dataset.
Your yard isn't the whole zone.
Nevada spans zones 4a-10a, but your yard sits in exactly one — and slope, tree cover, and cold-air pockets nudge it further. Enter your address and we'll score california poppy against your parcel's actual hardiness, soil, and sun.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Nevada is not one climate
Nevada’s winter-low ladder runs across 17 counties, from zone 5 in Elko County to zone 9 in Clark County. That is 40°F between the two counties’ average coldest night — the difference between california poppy overwintering in the ground and coming under cover.
The middle half of 17 counties runs 6.5–7 zones, with a median of 7 zones — a 4-zone span end to end.
Measured across 17 Nevada counties. USDA PHZM 2023, per county. Quartiles are order statistics — every figure shown is a value a real county recorded, not an interpolation. Your own site sits somewhere inside this range; a parcel report resolves where.
Where in Nevada Fits Best
California Poppy is rated for zones 6–10 — a cold floor USDA puts at -10 to 0°F. Against Nevada’s 17 counties that band holds in 15 of them, and the line runs at Humboldt County (zone 6a), the coldest county still inside it.
Inside zones 6–10
15 counties
- White Pine County · zone 6a
- Lander County · zone 6b
- Nye County · zone 6b
3 of 15 shown
Below the zone 6 floor
2 counties
- Elko County · zone 5a
- Eureka County · zone 5b
Winter cold is the limit here — the same plant works in a container that comes under cover.
County hardiness zones: USDA Plant Hardiness Zone Map (PHZM) 2023, per county. A zone is a 10°F band of average annual extreme minimum temperature, so the floor above is the band the plant's rating denotes, not a single measured kill point. Slope, shelter and cold-air drainage routinely move a site half a zone either way from its county figure — which is the part only your address resolves.
Even within Nevada's zones 4a-10a, county microclimates differ enough to change what thrives. These counties carry the closest zone match for california poppy (USDA PHZM 2023):
Zone Comparison
California Poppy Needs
- USDA Zones: 6-10
- Frost-Free Days: 60+
- Sun: Full Sun
- Mature size: 1.5 ft tall
- Picking window: ~60 days of harvest
- Drought tolerance: High
Nevada Has
- USDA Zones: 4a-10a
- Last Hard Freeze (28°F): Apr 28 - May 20
- First Hard Freeze (28°F): Oct 9 - Oct 21
- Annual Rainfall: 4-12 inches
- Common Soils: Desert sand, Caliche, Alkaline clay
Plant Zone Range (zones 6-10)
Preferred Soil pH
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS, and university Extension sources — per-field provenance varies and is published with the dataset. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant California Poppy in Nevada
The frost window
Across Nevada, the last spring hard freeze (28°F) clears between Apr 28 and May 20, and the first fall hard freeze lands between Oct 9 and Oct 21 (NOAA Regional Climate Centers ACIS, 1991-2020). Counting from the latest last freeze to the earliest first freeze, that's a 142-day window you can count on — up to 176 days on a mild site in a kind year. That marks the hard freeze, not the last light frost, so tender transplants usually wait another 2-3 weeks.
When to start the seed
California Poppy is direct-sown where it grows rather than started under cover, so there is no seed-tray head start to bank — Nevada's dates above are the whole calendar for it. That makes the last-freeze date the binding constraint, and a warmer pocket of your own yard is worth more to this crop than it is to a transplanted one.
Winter standing
Nevada runs as cold as USDA zone 4, and no sourced winter-hardiness floor is on record for california poppy, so this page does not state whether it overwinters here — and gives no fall establishment date on the strength of a guess. Whether california poppy is a permanent planting or a replant-every-spring crop for you turns on your own zone within Nevada; check its hardiness range against that before treating it as long-lived ground.
Timing tuned to sub-state frost dates — Nye County, not the statewide average.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: Growable Ground Plant Database — frost-free days from FAO ECOCROP, days to harvest from university Extension production guides, and growing-degree-day and chill-hour minimums that are compilation estimates rather than published figures. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Growing Season Fit
The zone check says california poppy survives winter in part of Nevada, not across all of it. Whether the season is long enough — and warm enough — is a different question.
Frost-free days
California Poppy wants 60+ frost-free days; a typical Nevada site sees ~163 (NOAA Regional Climate Centers ACIS, 1991-2020). That leaves comfortable headroom for succession planting.
Growing degree days
California Poppy needs ~800 GDD (base 50°F) to ripen. The state median runs ~1725 GDD (from PRISM 1991-2020 climate normals), so Nevada's typical season clears that easily.
GDD and chill-hour figures are computed from PRISM 1991-2020 monthly climate normals; frost-free days from NOAA Regional Climate Centers ACIS, 1991-2020. Each is the state median across its counties (P25/P75 span the within-state spread). Hardiness-zone range is USDA PHZM 2023.
Soil + Drainage Fit
California Poppy tolerates a wide pH range (pH 5-8) — 3 units, acid ground through alkaline — so soil acidity is rarely what limits it in Nevada. A soil test is still worth having, but for what else it tells you about this site, not to clear this plant. It will grow across that whole span, but it does best between pH 6 and 7.5 — worth knowing before you decide whether a Nevada soil test result is a problem or just a number. Drainage matters: this plant wants well (dry spells). If your Nevada site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Your land, not the state average
Nevada's soils run mostly very gravelly sandy loam, but SSURGO maps the series, texture, and drainage under your exact parcel. What matters for california poppy is the horizon its roots actually work, not the surface. That map unit, not the state average, decides how california poppy performs.
Check your parcel → Source: USDA NRCS SSURGO.
Plant pH requirements: FAO ECOCROP and USDA PLANTS, with the remaining rows from other published sources or Growable Ground compilation. Drainage: FAO ECOCROP, with the remaining rows from other published sources or Growable Ground compilation. Nevada soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Before you plant california poppy for food
Anything you grow to eat takes up what is in the ground it grows in, so what is on record near you is worth knowing before california poppy goes in. What follows is Nevada’s documented federal record at state scale — a screening signal, not a soil test, and not a statement about any one lot.
Safe to Grow Here?
What the federal record shows across Nevada — and how to grow with it.
We checked the federal record across Nevada — 16,813 documented sites across 8 of the 9 source types we track.
The most significant on record: 127 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Nevada carries one of the heavier federal records we track — and that's not a verdict on your yard. Proximity to a documented site is information, not a diagnosis: nothing here says any particular parcel is affected. It does earn one concrete step — before food beds go in the ground, a professional soil test tells you exactly what you're working with, and raised beds with clean imported soil grow well almost anywhere in the meantime.
Severity Distribution
across Nevada
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Nevada, Mining runs higher than the national average — 6,064 sites across Nevada. That's not a problem with your land — it's information about it.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What Else to Consider for California Poppy in Nevada
Zone compatibility tells you about winter cold survival — but Nevada growers also need to think about:
Extremely low rainfall (driest US state)
Alkaline soils (pH 8-9) limit many species
Extreme summer heat in southern valleys
Growing california poppy here specifically
California Poppy wants pH 5.0–8.0 and rates to USDA zones 6–10, but Nevada's soils are dominantly very gravelly sandy loam — the fit is decided by your parcel's own map unit, not the state average.
Match california poppy to your parcel's SSURGO map unit — test pH and texture, and amend toward its 5.0–8.0 range. How to handle it →
What to actually do about these — and the constraints that apply to every Nevada grower, not just california poppy — is covered on the Nevada growing guide.
Timing shifts within Nevada
Nevada isn't one climate. In Nye County, the last hard freeze (28°F) holds until about May 31 — roughly 30 days later than the recorded state median — so plant california poppy to your county's window, not the statewide date.
California Poppy needs about 60 days of frost-free season to complete its cycle. Even Elko County — Nevada’s shortest season at 110 frost-free days — clears that by 50 days, so season length isn’t the constraint anywhere in Nevada. What varies is your own parcel.
Across Nevada’s 17 counties the frost-free season runs from 110 days in Elko County to 321 days in Clark County — a spread of 211 days, which is why a single statewide planting date misleads. The median Nevada county sees 163 frost-free days, leaving california poppy about 103 days of slack on a typical parcel — room for a second sowing where the season runs long.
County last-freeze dates and frost-free day counts: NOAA Regional Climate Centers ACIS (1991-2020), county 28°F freeze (earlier than the folk 32°F "last frost"). California Poppy's 60-day requirement: USDA PLANTS / Growable Ground plant database (minimum frost-free days). A parcel report resolves your address's own frost dates.
Pollinator + Wildlife Value
California Poppy draws native bees (moderate value, Growable Ground Plant Database). Planting it near vegetable beds can lift fruit set on neighboring crops. Outdoors, california poppy can only work that bloom inside Nevada's frost window — roughly 163 days, opening after the last 28°F freeze (Apr 28 - May 20) and closing at the first (Oct 9 - Oct 21), per NOAA Regional Climate Centers ACIS, 1991-2020.
Good to Know Before You Plant California Poppy
California Poppy is listed as toxic to dogs, cats (all) at a mild level (Pet Poison Helpline). Most listed plants only cause brief upset — a raised bed or a fenced corner usually keeps curious pets clear.
Recommended California Poppy Varieties for Nevada
Nevada publishes no state variety trial for california poppy, so we won't invent a "best for Nevada" list. Choose types rated to your USDA hardiness zone (4a-10a), and confirm winter survival and drainage against your own parcel.
Nevada Cooperative Extension
For Nevada-specific cultivar recommendations, planting calendars, and pest pressure for california poppy, the canonical source is University of Nevada, Reno Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is California Poppy native to Nevada?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents California Poppy as native to Nevada. Planting it supports the pollinators and wildlife that evolved alongside it.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing California Poppy in Nevada
When can I plant California Poppy in Nevada?
Nevada's last spring hard freeze (28°F) clears between Apr 28 and May 20, and the first fall hard freeze lands between Oct 9 and Oct 21 (NOAA Regional Climate Centers ACIS, 1991-2020). No sourced winter-hardiness floor is on record for California Poppy, so this page does not state whether it overwinters in Nevada and publishes no fall establishment date for it — check its hardiness range against your own zone before treating it as a permanent planting.
What hardiness zone is California Poppy grown in across Nevada?
Nevada spans USDA hardiness zones 4a-10a (USDA ARS PHZM 2023). California Poppy carries a range of zones 6-10, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Nevada site have?
A typical Nevada site sees ~163 frost-free days per year (derived from NOAA Regional Climate Centers ACIS, 1991-2020). California Poppy needs 60+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Nye, the freeze-free season runs shorter than the state average, so verify your own county's window.
Is California Poppy native to Nevada?
Yes — the USDA PLANTS Database (accessed 2026-07-01) documents California Poppy as native to Nevada. Planting it supports the pollinators and wildlife that evolved alongside it.
How should I amend the soil for California Poppy in Nevada?
California Poppy tolerates pH 5-8 and well (dry spells) drainage (Growable Ground Plant Database). That is a 3-unit span, acid ground through alkaline, so pH is rarely what limits this plant on a Nevada site — amend for drainage and organic matter first.
Will California Poppy actually grow on my specific land in Nevada?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores california poppy against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in Nevada
State-level data is a sketch. Your Growable Ground report scores california poppy against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your lot that Nevada california poppy averages can't show:
We read public map data around Nevada — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Nevada california poppy average
Explore More
Growing guides for california poppy
Analysis by the Growable Ground research team, grounded in USDA PLANTS, USDA NRCS SSURGO, NOAA Climate Normals (1991-2020), and named Cooperative Extension sources. How we know →
Cite this dataset
Kirchick, M. (2026). Growable Ground Plant Database [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21435643
Licensed CC BY-NC 4.0. DOI 10.5281/zenodo.21435643
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