Trimble, Tennessee, sits in USDA hardiness zone 7b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
The conditions favor cabbage, prickly pear, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Trimble, 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 Trimble 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 Trimble — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Trimble — the short answer
Trimble, Tennessee: USDA zone 7b, about 242 days between hard freezes, across 413 acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 16
- 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
- ~242
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 413 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 Trimble's average, not your lot's — a low corner or a tree line moves it. Against Trimble's 242-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Trimble
Each reading below is measured for Trimble itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredTrimble runs about 242 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
MeasuredTrimble 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 Trimble is in
Trimble sits in the Mississippi Valley Loess Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Trimble's own centroid rather than borrowed from Dyer County.
What Grows in Trimble
Every plant below cleared Trimble's own zone 7b and its 242-day season. Each card opens that plant's Tennessee profile. How we score.
Is it too late to plant in Trimble?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 16; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 16 (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. 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 Trimble
Closest first, within ~10 miles of Trimble. Listing isn't leaking, and distance isn't exposure.
- Trimble ElementaryUnderground Storage Tanks · 350 ft
- Sandy's Mini-martUnderground Storage Tanks · 1700 ft
- DY:P-011Nitrate · 2000 ft
- Barbers Neighborhood MarketUnderground Storage Tanks · 2200 ft
- R E Gregory FarmUnderground Storage Tanks · 2.1 mi
- Town Of ObionUnderground Storage Tanks · 4.0 mi
- Little General # 62Underground Storage Tanks · 4.0 mi
- Illinois Central RailroadUnderground Storage Tanks · 4.1 mi
- Mann's AmocoUnderground Storage Tanks · 4.2 mi
- Huey Bro Lumber Co IncUnderground Storage Tanks · 4.2 mi
- Obion Denton CoUnderground Storage Tanks · 4.3 mi
- The Obion CoUnderground Storage Tanks · 4.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Trimble'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 Trimble.
Total Sites
105
within ~10 miles of Trimble
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Trimble
Severity Distribution
within ~10 miles of Trimble
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Trimble, two things run higher than the national average within ~10 miles of Trimble — Toxics Release Inventory (9 sites) and Underground Storage Tanks (79 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Trimble
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 Trimble average
Your land is one point inside Trimble
Everything above resolves to Trimble as a whole — one PHZM band and one 28°F frost record, read across 413 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 Trimble Average
Trimble Average
- ●USDA Zones 7b, averaged across Trimble
- ●One soil character for all of Trimble
- ●Frost dates read at Trimble's scale: Mar 16 to Nov 13
YOUR Parcel
- ✓Your exact zone, not Trimble's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Trimble
Pull a site-specific report for your exact address in Trimble, Tennessee — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Trimble averages can't show:
We read public map data around Trimble — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Trimble average
How we know this about Trimble
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 Trimble’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 Trimble
When does frost risk typically end in Trimble?
The last hard freeze (28°F) in Trimble typically lands around Mar 16, 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 6.
When is the first frost in Trimble?
The first hard freeze (28°F) in Trimble 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 242 days after the spring freeze cleared.
How long is the growing season in Trimble?
Measured between 28°F hard freezes, Trimble sees about 242 frost-free days — roughly Mar 16 through Nov 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 6 to Oct 30, about 207 days.
Is the soil safe to grow vegetables in Trimble?
The federal record around Trimble is a meaningful one — 105 documented sites, mostly Underground Storage Tanks entries (79), the nearest Underground Storage Tanks record under a tenth of a mile 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 Trimble?
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 Trimble's scale — its 7b band and its 242-day season. Your yard writes its own version of Trimble'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 Trimble’s own scale
6 of the readings below were taken at Trimble's own scale — its own ~242-day season between 28°F freezes, the 413 acres it covers and 105 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Trimble's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Trimble's own 28°F hard-freeze dates, about Mar 16 and Nov 13 and the ~242-day span between themNOAA 1991–2020 Climate Normals
- 105 documented contamination sites on the federal record near Trimble, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Trimble's boundary and the 413 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~242-day seasonGrowable Ground crop-matching engine
- The ecoregion at Trimble's own centroid, the Mississippi Valley Loess PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Trimble's 413 acres read through its county's SSURGO summaryfrom Dyer County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Dyer County
- The growing challenges every Tennessee grower plans around — written at state scale, so they stay on the state guidefrom Tennessee
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Dyer County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Trimble's 413 acreswhy one lot differs from the next →
- Which side of Trimble you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 413 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Trimble-wide figureread your own land →