Elmer, Oklahoma, sits in USDA hardiness zone 7b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, prickly pear, california poppy, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Elmer, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single Elmer lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around Elmer — soil, climate, flood, and parcel records. How we handle your address.
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Elmer — the short answer
Elmer, Oklahoma: USDA zone 7b, about 239 days between hard freezes, across 270 acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 13
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~239
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 270 acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 7b is Elmer's average, not your lot's — a low corner or a tree line moves it. Against Elmer's 239-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Elmer
Each reading below is measured for Elmer itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredElmer runs about 239 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredElmer sits in USDA hardiness zone 7b.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country Elmer is in
Elmer sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Elmer's own centroid rather than borrowed from Jackson County.
What Grows in Elmer
Every plant below cleared Elmer's own zone 7b and its 239-day season. Each card opens that plant's Oklahoma profile. How we score.
Is it too late to plant in Elmer?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 19; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 19 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 13 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
What's on the federal record near Elmer
Closest first, within ~10 miles of Elmer. Listing isn't leaking, and distance isn't exposure.
- General Store of Elmer LLCUnderground Storage Tanks · 1.1 mi
- Arrow Van LinesUnderground Storage Tanks · 5.0 mi
- Harkins Station & Car WashUnderground Storage Tanks · 5.1 mi
- Altus Auto & RadiatorUnderground Storage Tanks · 5.2 mi
- Fas Gas #4Underground Storage Tanks · 5.2 mi
- Baxter HenryUnderground Storage Tanks · 5.2 mi
- Olustee Municipal AirfieldUnderground Storage Tanks · 5.4 mi
- Oklahoma Military Department ArmoryUnderground Storage Tanks · 5.6 mi
- Svc Btry 171 FaUnderground Storage Tanks · 5.6 mi
- Hillcrest Service StationUnderground Storage Tanks · 5.8 mi
- Big Ben Oil Co.Underground Storage Tanks · 5.8 mi
- Shamrock StationUnderground Storage Tanks · 5.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Elmer's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near Elmer.
Severity Distribution
within ~10 miles of Elmer
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Elmer, Underground Storage Tanks runs higher than the national average — 27 sites within ~10 miles of Elmer. That's not a problem with your land — it's information about it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Elmer
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the Elmer average
Your land is one point inside Elmer
Everything above resolves to Elmer as a whole — one PHZM band and one 28°F frost record, read across 270 acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at town scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the Elmer Average
Elmer Average
- ●USDA Zones 7b, averaged across Elmer
- ●One soil character for all of Elmer
- ●Frost dates read at Elmer's scale: Mar 19 to Nov 13
YOUR Parcel
- ✓Your exact zone, not Elmer's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Elmer
Pull a site-specific report for your exact address in Elmer, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Elmer averages can't show:
We read public map data around Elmer — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Elmer average
How we know this about Elmer
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Elmer’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at town grain anywhere on this page — there is no town-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about Elmer
When does frost risk typically end in Elmer?
The last hard freeze (28°F) in Elmer typically lands around Mar 19, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Apr 9.
When is the first frost in Elmer?
The first hard freeze (28°F) in Elmer typically arrives around Nov 13, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 30, so the watching starts about Oct 14 — about 239 days after the spring freeze cleared.
How long is the growing season in Elmer?
Measured between 28°F hard freezes, Elmer sees about 239 frost-free days — roughly Mar 19 through Nov 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 9 to Oct 30, about 204 days.
Is the soil safe to grow vegetables in Elmer?
The federal record around Elmer is light — 28 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (27), the nearest Underground Storage Tanks record about 1.1 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Elmer?
From about Oct 14 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 13 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 13. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Elmer's scale — its 7b band and its 239-day season. Your yard writes its own version of Elmer's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at Elmer’s own scale
6 of the readings below were taken at Elmer's own scale — its own ~239-day season between 28°F freezes, the 270 acres it covers and 28 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Elmer's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Elmer's own 28°F hard-freeze dates, about Mar 19 and Nov 13 and the ~239-day span between themNOAA 1991–2020 Climate Normals
- 28 documented contamination sites on the federal record near Elmer, the closest Underground Storage Tanks record about 1.1 miles out from the town centreFederal environmental registers
- Elmer's boundary and the 270 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~239-day seasonGrowable Ground crop-matching engine
- The ecoregion at Elmer's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Elmer's 270 acres read through its county's SSURGO summaryfrom Jackson County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Jackson County
- The growing challenges every Oklahoma grower plans around — written at state scale, so they stay on the state guidefrom Oklahoma
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Jackson County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Elmer's 270 acreswhy one lot differs from the next →
- Which side of Elmer you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 270 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 1.1 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any Elmer-wide figureread your own land →
More in Oklahoma
Wider growing context
What grows across OklahomaElmer sits outside our named growing regions, so Oklahoma as a whole is its closest context here.
Nearby growing guides