Middle Mesa, New Mexico, 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 Middle Mesa, 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 Middle Mesa 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 Middle Mesa — soil, climate, flood, and parcel records. How we handle your address.
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Middle Mesa — the short answer
Middle Mesa, New Mexico: USDA zone 6b, about 169 days between hard freezes, across 4K acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 16
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~169
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 4K 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 Middle Mesa's average, not your lot's — a low corner or a tree line moves it. Against Middle Mesa's 169-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Middle Mesa
Each reading below is measured for Middle Mesa itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMiddle Mesa runs about 169 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
MeasuredMiddle Mesa 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 Middle Mesa is in
Middle Mesa sits in the Colorado Plateaus — EPA Level III, inside the wider North American Deserts. That is read at Middle Mesa's own centroid, and it is not what its county reads: San Juan County is mostly Arizona/New Mexico Plateau. The wider page above you is answering a different question about different ground.
What Grows in Middle Mesa
Every plant below cleared Middle Mesa's own zone 6b and its 169-day season. Each card opens that plant's New Mexico profile. How we score.
Is it too late to plant in Middle Mesa?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Apr 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 30 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 16 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Middle Mesa
Closest first, within ~10 miles of Middle Mesa. Listing isn't leaking, and distance isn't exposure.
- NB03200608DCDNitrate · 3.2 mi
- CDOT AllisonUnderground Storage Tanks · 3.3 mi
- Tiffany CompressorUnderground Storage Tanks · 3.4 mi
- TIFFANY COMPRESSOR STATIONBrownfields · 4.8 mi
- NB03200517ABDNitrate · 5.2 mi
- NB03200517ADANitrate · 5.4 mi
- Navajo State ParkUnderground Storage Tanks · 5.5 mi
- NB03200520ABA2Nitrate · 5.6 mi
- NB03200508CCDNitrate · 5.7 mi
- Piedra Peak PlazaUnderground Storage Tanks · 5.7 mi
- NB03200520AABNitrate · 5.7 mi
- San Juan MarinaUnderground Storage Tanks · 5.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Middle Mesa'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 Middle Mesa.
Sources Checked
within ~10 miles of Middle Mesa
Severity Distribution
within ~10 miles of Middle Mesa
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Middle Mesa, Nitrate runs higher than the national average — 36 sites within ~10 miles of Middle Mesa. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Middle Mesa
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 Middle Mesa average
Your land is one point inside Middle Mesa
Everything above resolves to Middle Mesa as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Middle Mesa Average
Middle Mesa Average
- ●USDA Zones 6b, averaged across Middle Mesa
- ●One soil character for all of Middle Mesa
- ●Frost dates read at Middle Mesa's scale: Apr 30 to Oct 16
YOUR Parcel
- ✓Your exact zone, not Middle Mesa's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Middle Mesa
Pull a site-specific report for your exact address in Middle Mesa, New Mexico — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Middle Mesa averages can't show:
We read public map data around Middle Mesa — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Middle Mesa average
How we know this about Middle Mesa
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 Middle Mesa’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 Middle Mesa
When does frost risk typically end in Middle Mesa?
The last hard freeze (28°F) in Middle Mesa typically lands around Apr 30, 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 21.
When is the first frost in Middle Mesa?
The first hard freeze (28°F) in Middle Mesa typically arrives around Oct 16, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 2, so the watching starts about Sep 16 — about 169 days after the spring freeze cleared.
How long is the growing season in Middle Mesa?
Measured between 28°F hard freezes, Middle Mesa sees about 169 frost-free days — roughly Apr 30 through Oct 16, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 21 to Oct 2, about 134 days.
Is the soil safe to grow vegetables in Middle Mesa?
The federal record around Middle Mesa is light — 46 documented sites across the 9 federal source types we checked, mostly Nitrate entries (36), the nearest Nitrate record about 3.2 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 Middle Mesa?
From about Sep 16 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 16 (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 16. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Middle Mesa's scale — its 6b band and its 169-day season. Your yard writes its own version of Middle Mesa'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 Middle Mesa’s own scale
6 of the readings below were taken at Middle Mesa's own scale — its own ~169-day season between 28°F freezes, the 4,293 acres it covers and 46 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Middle Mesa's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Middle Mesa's own 28°F hard-freeze dates, about Apr 30 and Oct 16 and the ~169-day span between themNOAA 1991–2020 Climate Normals
- 46 documented contamination sites on the federal record near Middle Mesa, the closest Nitrate record about 3.2 miles out from the town centreFederal environmental registers
- Middle Mesa's boundary and the 4,293 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~169-day seasonGrowable Ground crop-matching engine
- Middle Mesa sits in the Colorado Plateaus — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Middle Mesa's 4,293 acres read through its county's SSURGO summaryfrom San Juan County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom San Juan County
- The growing challenges every New Mexico grower plans around — written at state scale, so they stay on the state guidefrom New Mexico
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom San Juan County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Middle Mesa's 4,293 acreswhy one lot differs from the next →
- Which side of Middle Mesa you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,293 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 3.2 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 Middle Mesa-wide figureread your own land →