Ruth, California, sits in USDA hardiness zone 8b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
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 Ruth, 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 Ruth 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 Ruth — soil, climate, flood, and parcel records. How we handle your address.
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Ruth — the short answer
Ruth, California: USDA zone 8b, about 200 days between hard freezes, across 25K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~200
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 25K 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 8b is Ruth's average, not your lot's — a low corner or a tree line moves it. Against Ruth's 200-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Ruth
Each reading below is measured for Ruth itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRuth runs about 200 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
MeasuredRuth 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 Ruth is in
Ruth sits in the Klamath Mountains/California High North Coast Range — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Ruth's own centroid rather than borrowed from Trinity County.
What Grows in Ruth
Every plant below cleared Ruth's own zone 8b and its 200-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Ruth?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 4 — 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 Ruth
Closest first, within ~10 miles of Ruth. Listing isn't leaking, and distance isn't exposure.
- RUTH TRANSFER STATIONBrownfields · 1.1 mi
- TRINITY COUNTY ROAD DEPT (RUTH MAINT YARD)Brownfields · 2.1 mi
- RebelMining · 5.1 mi
- Rebel CopperMining · 5.1 mi
- Lone PineMining · 5.1 mi
- UnnamedMining · 6.1 mi
- Hale Creek MineMining · 7.5 mi
- Armstrong No. 2 MineMining · 7.6 mi
- LambertMining · 7.7 mi
- Iron MountainMining · 8.0 mi
- FederalMining · 8.2 mi
- Vine OakMining · 8.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Ruth'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 Ruth.
Severity Distribution
within ~10 miles of Ruth
Highest-Severity Sites
Know Before You Grow
- •Mine waste leaches heavy metals. Test for lead, arsenic and cadmium before growing food here.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in Ruth
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 Ruth average
Your land is one point inside Ruth
Everything above resolves to Ruth as a whole — one PHZM band and one 28°F frost record, read across 25K 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 Ruth Average
Ruth Average
- ●USDA Zones 8b, averaged across Ruth
- ●One soil character for all of Ruth
- ●Frost dates read at Ruth's scale: Apr 18 to Nov 4
YOUR Parcel
- ✓Your exact zone, not Ruth's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ruth
Pull a site-specific report for your exact address in Ruth, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Ruth averages can't show:
We read public map data around Ruth — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Ruth average
How we know this about Ruth
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 Ruth’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 Ruth
When does frost risk typically end in Ruth?
The last hard freeze (28°F) in Ruth typically lands around Apr 18, 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 9.
When is the first frost in Ruth?
The first hard freeze (28°F) in Ruth typically arrives around Nov 4, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 21, so the watching starts about Oct 5 — about 200 days after the spring freeze cleared.
How long is the growing season in Ruth?
Measured between 28°F hard freezes, Ruth sees about 200 frost-free days — roughly Apr 18 through Nov 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 9 to Oct 21, about 165 days.
Is the soil safe to grow vegetables in Ruth?
The federal record around Ruth is light — 24 documented sites across the 9 federal source types we checked, mostly Mining entries (21), the nearest Brownfields 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 Ruth?
From about Oct 5 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 4 (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 4. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Ruth's scale — its 8b band and its 200-day season. Your yard writes its own version of Ruth'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 Ruth’s own scale
6 of the readings below were taken at Ruth's own scale — its own ~200-day season between 28°F freezes, the 24,874 acres it covers and 24 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Ruth's own USDA hardiness band, zones 8bUSDA PHZM 2023
- Ruth's own 28°F hard-freeze dates, about Apr 18 and Nov 4 and the ~200-day span between themNOAA 1991–2020 Climate Normals
- 24 documented contamination sites on the federal record near Ruth, the closest Brownfields record about 1.1 miles out from the town centreFederal environmental registers
- Ruth's boundary and the 24,874 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~200-day seasonGrowable Ground crop-matching engine
- The ecoregion at Ruth's own centroid, the Klamath Mountains/California High North Coast RangeUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Ruth's 24,874 acres read through its county's SSURGO summaryfrom Trinity County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Trinity County
- The growing challenges every California grower plans around — written at state scale, so they stay on the state guidefrom California
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Trinity County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Ruth's 24,874 acreswhy one lot differs from the next →
- Which side of Ruth you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 24,874 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Ruth-wide figureread your own land →
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