What Grows in Republic, Washington

USDA Zones 6a · 909 acres

Republic, Washington, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.

A short list that earns its place here — cabbage, blackberry, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.

Score your parcel · free

Even in Republic, 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 Republic 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 Republic — soil, climate, flood, and parcel records. How we handle your address.

No card required · your full report in seconds

Republic — the short answer

Republic, Washington: USDA zone 6a, about 170 days between hard freezes, across 909 acres of city.

USDA zone
6a
USDA PHZM 2023
Last hard freeze (28°F)
Apr 26
NOAA 1991–2020 Climate Normals, 28°F — this town
First hard freeze (28°F)
Oct 13
NOAA 1991–2020 Climate Normals, 28°F — this town
Days between freezes
~170
NOAA 1991–2020 Climate Normals, 28°F — this town
City area
909 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

6a6a
3a (Cold)13b (Hot)

Zone 6a is Republic's average, not your lot's — a low corner or a tree line moves it. Against Republic's 170-day season, see what your own ground reads.

Soil varies lot by lot — soil types explained.

What this means for growing in Republic

Each reading below is measured for Republic itself — here is what it means for a garden here, and the move an experienced grower makes about it.

Season length

Measured

Republic runs about 170 days between hard freezes — a moderate growing season.

There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.

Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.

NOAA 1991–2020 Climate Normals

Winter hardiness

Measured

Republic sits in USDA hardiness zone 6a.

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 Republic is in

Republic sits in the Northern Rockies — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Republic's own centroid rather than borrowed from Ferry County.

What that means for soil

What Grows in Republic

Every plant below cleared Republic's own zone 6a and its 170-day season. Each card opens that plant's Washington profile. How we score.

cabbage, photograph
Growing cabbage in WashingtonZones 2–11Republic's 6a — 4 zones of cold margin.
blackberry, photograph
Washington blackberry guideZones 5–8Republic's 6a — 1 zone of cold margin.
California poppy, photograph
California poppy in WashingtonZones 6–10Republic's 6a is its exact cold limit.
collard greens, photograph
Collard greens: Washington growing notesZones 2–11Republic's 6a — 4 zones of cold margin.
cranberry, photograph
Growing cranberry in WashingtonZones 2–7Republic's 6a — 4 zones of cold margin.
lavender, photograph
Washington lavender guideZones 5–8Republic's 6a — 1 zone of cold margin.
garlic, photograph
Garlic in WashingtonZones 2–10Republic's 6a — 4 zones of cold margin.
pawpaw, photograph
Pawpaw: Washington growing notesZones 5–9Republic's 6a — 1 zone of cold margin.
St. Johns wort, photograph
Growing st. johns wort in WashingtonZones 3–8Republic's 6a — 3 zones of cold margin.
kale, photograph
Washington kale guideZones 2–11Republic's 6a — 4 zones of cold margin.
pecan, photograph
Pecan in WashingtonZones 5–9Republic's 6a — 1 zone of cold margin.
Turkish rocket, photograph
Turkish rocket: Washington growing notesRepublic's 170 days clear the ~90 it needs.
lentil, photograph
Growing lentil in WashingtonZones 2–11Republic's 170 days clear the ~70 it needs.
okra, photograph
Washington okra guideZones 2–12Republic's 170 days clear the ~50 it needs.
potato, photograph
Potato in WashingtonZones 2–11Republic's 6a — 4 zones of cold margin.
hosta, photograph
Hosta: Washington growing notesZones 3–8Republic's 6a — 3 zones of cold margin.
sunflower, photograph
Growing sunflower in WashingtonZones 2–11Republic's 170 days clear the ~70 it needs.
azalea, photograph
Washington azalea guideZones 4–8Republic's 6a — 2 zones of cold margin.
hops, photograph
Hops in WashingtonZones 3–8Republic's 6a — 3 zones of cold margin.
iris, photograph
Iris: Washington growing notesZones 3–10Republic's 6a — 3 zones of cold margin.
French marigold, photograph
Growing french marigold in WashingtonRepublic's 170 days clear the ~50 it needs.
lilac, photograph
Washington lilac guideZones 4–10Republic's 6a — 2 zones of cold margin.
American bittersweet, photograph
American bittersweet in WashingtonZones 3–8Republic's 6a — 3 zones of cold margin.
tulip, photograph
Tulip: Washington growing notesZones 6–8Republic's 6a is its exact cold limit.
American elm, photograph
Growing american elm in WashingtonZones 3–9Republic's 6a — 3 zones of cold margin.
Ethiopian mustard, photograph
Washington ethiopian mustard guideZones 4–10Republic's 6a — 2 zones of cold margin.
Kentucky bluegrass, botanical illustration
Kentucky bluegrass in WashingtonZones 2–7Republic's 6a — 4 zones of cold margin.
blue spruce, photograph
Blue spruce: Washington growing notesZones 2–8Republic's 6a — 4 zones of cold margin.
alfalfa, photograph
Growing alfalfa in WashingtonZones 2–10Republic's 170 days clear the ~100 it needs.
Canada wild rye, photograph
Washington canada wild rye guideZones 3–8Republic's 6a — 3 zones of cold margin.

Is it too late to plant in Republic?

Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 29; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 26 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 13 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.

What's on the federal record near Republic

Closest first, within ~10 miles of Republic. Listing isn't leaking, and distance isn't exposure.

  1. REPUBLIC RANGER STATIONUnderground Storage Tanks · 700 ft
  2. FERRY COUNTY SHERIFF DEPTUnderground Storage Tanks · 1100 ft
  3. REPUBLIC MINE/MILLSuperfund · 1200 ft
  4. WAYNES CENTRAL SERVICEUnderground Storage Tanks · 1400 ft
  5. REPUBLIC SCHOOL DISTRICT 309Underground Storage Tanks · 1400 ft
  6. ANDERSONS GROCERY & FLOUR MILLUnderground Storage Tanks · 1400 ft
  7. CLIFFS TIRE & MUFFLER SERVICEUnderground Storage Tanks · 1500 ft
  8. FERRY PUD 1Underground Storage Tanks · 1500 ft
  9. REPUBLIC CENTRAL OFFICEUnderground Storage Tanks · 1800 ft
  10. MORRIS CHEVROLET INCUnderground Storage Tanks · 2000 ft
  11. BEAVER TRAPUnderground Storage Tanks · 0.5 mi
  12. REPUBLIC SHOPUnderground Storage Tanks · 0.7 mi

6 more sites are on the record inside the same radius. See them on the map

Measured from Republic'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 Republic.

Total Sites

71

within ~10 miles of Republic

Risk Level

Elevated

Highest-severity

4 Superfund sites (none NPL-listed)

Severity Distribution

within ~10 miles of Republic

High5Moderate43Low23

Highest-Severity Sites

Blue Horse
Mining Sites · Past Producer
California
Mining Sites · Past Producer
Knob Hill Mine
Mining Sites · Producer
Silver Tip
Mining Sites · Unknown
36N/33E-07f01
Nitrate Monitoring · Well

A note from Gnorman

What an experienced grower watches for around here

In and around Republic, two things run higher than the national average within ~10 miles of Republic — Mining (35 sites) and Superfund (4 sites). 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.

Superfund: Superfund sites represent the most severe contamination in the federal system.

Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.

Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).

Free Report

Check your specific parcel in Republic

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 Republic average

Your land is one point inside Republic

Everything above resolves to Republic as a whole — one PHZM band and one 28°F frost record, read across 909 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 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 Republic Average

Republic Average

  • USDA Zones 6a, averaged across Republic
  • One soil character for all of Republic
  • Frost dates read at Republic's scale: Apr 26 to Oct 13

YOUR Parcel

  • Your exact zone, not Republic's 6a
  • Your SSURGO soil type & pH
  • Your sun exposure, cast in 3D

See MY Growing Report

Free Report

Read your specific parcel in Republic

Pull a site-specific report for your exact address in Republic, Washington — soil, sun, drainage, frost risk, and scored plant recommendations.

Three things about your lot that Republic averages can't show:

Your soil pHYour frost-free days — Republic averages 170Your sun & shade

We read public map data around Republic — soil, climate, flood, and parcel records. How we handle your address.

25+ data sources read at your address, not the Republic average

How we know this about Republic

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 Republic’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 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 Republic

When does frost risk typically end in Republic?

The last hard freeze (28°F) in Republic typically lands around Apr 26, 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 May 17.

When is the first frost in Republic?

The first hard freeze (28°F) in Republic typically arrives around Oct 13, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 29, so the watching starts about Sep 13 — about 170 days after the spring freeze cleared.

How long is the growing season in Republic?

Measured between 28°F hard freezes, Republic sees about 170 frost-free days — roughly Apr 26 through Oct 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 17 to Sep 29, about 135 days.

Is the soil safe to grow vegetables in Republic?

The federal record around Republic is a meaningful one — 71 documented sites, mostly Mining entries (35), the nearest Underground Storage Tanks record about 0.1 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.

How do I protect my plants from frost in Republic?

From about Sep 13 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 Oct 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 Oct 13. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.

Everything above is measured at Republic's scale — its 6a band and its 170-day season. Your yard writes its own version of Republic'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 Republic’s own scale

6 of the readings below were taken at Republic's own scale — its own ~170-day season between 28°F freezes, the 909 acres it covers and 71 documented sites around it; 4 are borrowed from a wider read, named and linked below.

Measured here

  • Republic's own USDA hardiness band, zones 6aUSDA PHZM 2023
  • Republic's own 28°F hard-freeze dates, about Apr 26 and Oct 13 and the ~170-day span between themNOAA 1991–2020 Climate Normals
  • 71 documented contamination sites on the federal record near Republic, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
  • Republic's boundary and the 909 acres inside itUS Census TIGER/Line 2025
  • Which of 1,086 plants clear zones 6a and a ~170-day seasonGrowable Ground crop-matching engine
  • The ecoregion at Republic's own centroid, the Northern RockiesUS EPA Level III Ecoregions

Inherited from a wider read

  • Soil character — no town-scale survey exists, so Republic's 909 acres read through its county's SSURGO summaryfrom Ferry County
  • Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ferry 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 Ferry County

What this page can’t tell you

  • The soil pH, drainage, sun hours, and frost pockets on any one lot among Republic's 909 acreswhy one lot differs from the next
  • Which side of Republic you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 909 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 Republic-wide figureread your own land
The next step finer is your own address