Walsh, Colorado, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
These conditions suit cabbage, blackberry, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Walsh, 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 Walsh 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 Walsh — soil, climate, flood, and parcel records. How we handle your address.
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Walsh — the short answer
Walsh, Colorado: USDA zone 6b, about 191 days between hard freezes, across 286 acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 22
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~191
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 286 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 6b is Walsh's average, not your lot's — a low corner or a tree line moves it. Against Walsh's 191-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Walsh
Each reading below is measured for Walsh itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWalsh runs about 191 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
MeasuredWalsh sits in USDA hardiness zone 6b.
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 Walsh is in
Walsh sits in the High Plains — EPA Level III, inside the wider Great Plains. That is read at Walsh's own centroid rather than borrowed from Baca County.
What Grows in Walsh
Every plant below cleared Walsh's own zone 6b and its 191-day season. Each card opens that plant's Colorado profile. How we score.
Is it too late to plant in Walsh?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 14 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 22 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
What's on the federal record near Walsh
Closest first, within ~10 miles of Walsh. Listing isn't leaking, and distance isn't exposure.
- SC03004332DC2Nitrate · 300 ft
- WALSH HEALTHCARE CENTERBrownfields · 650 ft
- Cook Oil CoUnderground Storage Tanks · 850 ft
- Walsh Piccadilly LLCUnderground Storage Tanks · 850 ft
- Walsh AirportUnderground Storage Tanks · 1.9 mi
- BACA COUNTY FEEDYARDCAFO · 2.0 mi
- Walsh School District Re-1Underground Storage Tanks · 3.8 mi
- SC03004405DCANitrate · 7.8 mi
- Cig Flank Compressor StationUnderground Storage Tanks · 8.2 mi
- SC03204205BBBNitrate · 8.2 mi
- SC02904433BDBNitrate · 8.4 mi
- Norman SmithUnderground Storage Tanks · 9.0 mi
2 more sites are on the record inside the same radius. See them on the map
Measured from Walsh'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 Walsh.
Total Sites
19
within ~10 miles of Walsh
Risk Level
Low
Highest-severity
1 concentrated animal feeding operation
Sources Checked
within ~10 miles of Walsh
Severity Distribution
within ~10 miles of Walsh
Highest-Severity Sites
Know Before You Grow
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in Walsh
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 Walsh average
Your land is one point inside Walsh
Everything above resolves to Walsh as a whole — one PHZM band and one 28°F frost record, read across 286 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 Walsh Average
Walsh Average
- ●USDA Zones 6b, averaged across Walsh
- ●One soil character for all of Walsh
- ●Frost dates read at Walsh's scale: Apr 14 to Oct 22
YOUR Parcel
- ✓Your exact zone, not Walsh's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Walsh
Pull a site-specific report for your exact address in Walsh, Colorado — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Walsh averages can't show:
We read public map data around Walsh — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Walsh average
How we know this about Walsh
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 Walsh’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 Walsh
When does frost risk typically end in Walsh?
The last hard freeze (28°F) in Walsh typically lands around Apr 14, 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 5.
When is the first frost in Walsh?
The first hard freeze (28°F) in Walsh typically arrives around Oct 22, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 8, so the watching starts about Sep 22 — about 191 days after the spring freeze cleared.
How long is the growing season in Walsh?
Measured between 28°F hard freezes, Walsh sees about 191 frost-free days — roughly Apr 14 through Oct 22, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 5 to Oct 8, about 156 days.
Is the soil safe to grow vegetables in Walsh?
The federal record around Walsh is light — 19 documented sites across the 9 federal source types we checked, mostly Nitrate entries (10), the nearest Nitrate record under a tenth of a mile 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 Walsh?
From about Sep 22 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 22 (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 22. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Walsh's scale — its 6b band and its 191-day season. Your yard writes its own version of Walsh'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 Walsh’s own scale
6 of the readings below were taken at Walsh's own scale — its own ~191-day season between 28°F freezes, the 286 acres it covers and 19 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Walsh's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Walsh's own 28°F hard-freeze dates, about Apr 14 and Oct 22 and the ~191-day span between themNOAA 1991–2020 Climate Normals
- 19 documented contamination sites on the federal record near Walsh, the closest Nitrate record under a tenth of a mile out from the town centreFederal environmental registers
- Walsh's boundary and the 286 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~191-day seasonGrowable Ground crop-matching engine
- The ecoregion at Walsh's own centroid, the High PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Walsh's 286 acres read through its county's SSURGO summaryfrom Baca County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Baca County
- The growing challenges every Colorado grower plans around — written at state scale, so they stay on the state guidefrom Colorado
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Baca County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Walsh's 286 acreswhy one lot differs from the next →
- Which side of Walsh you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 286 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate 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 Walsh-wide figureread your own land →
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