Elma, Washington, sits in USDA hardiness zone 8b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
On paper, cabbage, fig, california poppy, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Elma, 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 Elma 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 Elma — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Elma — the short answer
Elma, Washington: USDA zone 8b, about 256 days between hard freezes, across 2K acres of city.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 9
- Grays Harbor County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 20
- Grays Harbor County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~256
- Grays Harbor County normal — NOAA 1991–2020, nearest to this town
- City area
- 2K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Grays Harbor County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Elma's average, not your lot's — a low corner or a tree line moves it. Against Elma's 256-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Elma
Each reading below is measured for Elma itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsElma runs about 256 days between hard freezes (read from Grays Harbor County, the closest normal to Elma) — 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
MeasuredElma sits in USDA hardiness zone 8b.
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 Elma is in
Elma sits in the Coast Range — EPA Level III, inside the wider Marine West Coast Forest. That is read at Elma's own centroid rather than borrowed from Grays Harbor County.
What Grows in Elma
Every plant below cleared Elma's own zone 8b and its 256-day season. Each card opens that plant's Washington profile. How we score.
Is it too late to plant in Elma?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 9; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 9 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 20 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Elma
Closest first, within ~10 miles of Elma. Listing isn't leaking, and distance isn't exposure.
- SCHAFER STATE PARKUnderground Storage Tanks · 750 ft
- DAY MOTORS INCUnderground Storage Tanks · 1400 ft
- CHEVRON 93843Underground Storage Tanks · 1400 ft
- ELMA CITY OFUnderground Storage Tanks · 1700 ft
- MARK SUNSTRUMUnderground Storage Tanks · 1800 ft
- TELEPHONE UTILITIES OF WASHINGTON MONTESANOUnderground Storage Tanks · 2000 ft
- ELMA SHELL PIZZA & BURGERUnderground Storage Tanks · 2100 ft
- TOADS EXPRESS MART 851Underground Storage Tanks · 2300 ft
- ELMA MINI MALLUnderground Storage Tanks · 2600 ft
- TELEPHONE UTILITIES OF WASHINGTON ELMAUnderground Storage Tanks · 0.6 mi
- BAYVIEW BUILDING MATERIALSUnderground Storage Tanks · 0.7 mi
- TRI COUNTY OIL COMPANYUnderground Storage Tanks · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Elma'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 Elma.
Total Sites
107
within ~10 miles of Elma
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Elma
Severity Distribution
within ~10 miles of Elma
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Elma, Underground Storage Tanks runs higher than the national average — 74 sites within ~10 miles of Elma. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Elma
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 Elma average
Your land is one point inside Elma
Everything above resolves to Elma as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Grays Harbor County’s record because no 30-year normal resolves at this city’s own centroid. 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 city 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 Elma Average
Elma Average
- ●USDA Zones 8b, averaged across Elma
- ●One soil character for all of Elma
- ●Frost dates read at Elma's scale: Mar 9 to Nov 20
YOUR Parcel
- ✓Your exact zone, not Elma's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Elma
Pull a site-specific report for your exact address in Elma, Washington — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Elma averages can't show:
We read public map data around Elma — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Elma average
How we know this about Elma
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Grays Harbor County’s record, because none resolves here; 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 city grain anywhere on this page — there is no city-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 Elma
When does frost risk typically end in Elma?
The last hard freeze (28°F) in Elma typically lands around Mar 9, 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 Mar 30.
When is the first frost in Elma?
The first hard freeze (28°F) in Elma typically arrives around Nov 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 6, so the watching starts about Oct 21 — about 256 days after the spring freeze cleared.
How long is the growing season in Elma?
Measured between 28°F hard freezes, Elma sees about 256 frost-free days — roughly Mar 9 through Nov 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 30 to Nov 6, about 221 days.
Is the soil safe to grow vegetables in Elma?
The federal record around Elma shows 107 documented sites, mostly Underground Storage Tanks entries (74), the nearest Underground Storage Tanks record about 0.1 miles out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Elma?
From about Oct 21 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 20 (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 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Elma's scale — its 8b band and its 256-day season. Your yard writes its own version of Elma'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 Elma’s own scale
5 of the readings below were taken at Elma's own scale — the 1,769 acres it covers and 107 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Elma's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 107 documented contamination sites on the federal record near Elma, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Elma's boundary and the 1,769 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~256-day seasonGrowable Ground crop-matching engine
- The ecoregion at Elma's own centroid, the Coast RangeUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Elma has no normal of its own, so its county's is the closest measured readfrom Grays Harbor County
- Soil character — no town-scale survey exists, so Elma's 1,769 acres read through its county's SSURGO summaryfrom Grays Harbor County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Grays Harbor County
- The growing challenges every Washington grower plans around — written at state scale, so they stay on the state guidefrom Washington
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Grays Harbor County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Elma's 1,769 acreswhy one lot differs from the next →
- Which side of Elma you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,769 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Elma-wide figureread your own land →