Bylas, Arizona, sits in USDA hardiness zone 8b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Among the crops suited to this profile: cabbage, fig, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Bylas, 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 Bylas 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 Bylas — soil, climate, flood, and parcel records. How we handle your address.
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Bylas — the short answer
Bylas, Arizona: USDA zone 8b, about 275 days between hard freezes, across 3K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 22
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 24
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~275
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 3K 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 Bylas's average, not your lot's — a low corner or a tree line moves it. Against Bylas's 275-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Bylas
Each reading below is measured for Bylas itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBylas runs about 275 days between hard freezes — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredBylas 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 Bylas is in
Bylas sits in the Sonoran Basin and Range — EPA Level III, inside the wider North American Deserts. That is read at Bylas's own centroid, and it is not what its county reads: Graham County is mostly Madrean Archipelago. The wider page above you is answering a different question about different ground.
What Grows in Bylas
Every plant below cleared Bylas's own zone 8b and its 275-day season. Each card opens that plant's Arizona profile. How we score.
Is it too late to plant in Bylas?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Jan 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 22 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 24 — long-season crops need about 90 days of runway, quick greens only 30. And with a calendar this mild, the honest answer is that planting barely stops — winter opens seasons colder regions never see.
Documented around Bylas
Survey cells within 31 miles of Bylas checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 408 miles off. What to watch for.
What's on the federal record near Bylas
Closest first, within ~10 miles of Bylas. Listing isn't leaking, and distance isn't exposure.
- Geronimo ProspectMining · 3.0 mi
- Southland Copper ClaimsMining · 3.5 mi
- D-04-22 12ACNitrate · 4.6 mi
- D-04-22 13ACCNitrate · 5.1 mi
- D-04-22 13ACDNitrate · 5.2 mi
- D-04-22 13DD 2Nitrate · 5.6 mi
- D-04-22 13DD 3Nitrate · 5.6 mi
- D-04-22 24ACD1Nitrate · 5.8 mi
- Myres PropertyMining · 5.8 mi
- Tribal ClaimsMining · 6.0 mi
- D-04-23 18CCNitrate · 6.0 mi
- D-04-22 25BCBNitrate · 6.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Bylas'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 Bylas.
Sources Checked
within ~10 miles of Bylas
Severity Distribution
within ~10 miles of Bylas
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Bylas, two things run higher than the national average within ~10 miles of Bylas — Mining (10 sites) and Nitrate (32 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.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Bylas
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 Bylas average
Your land is one point inside Bylas
Everything above resolves to Bylas as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Bylas Average
Bylas Average
- ●USDA Zones 8b, averaged across Bylas
- ●One soil character for all of Bylas
- ●Frost dates read at Bylas's scale: Feb 22 to Nov 24
YOUR Parcel
- ✓Your exact zone, not Bylas's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Bylas
Pull a site-specific report for your exact address in Bylas, Arizona — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Bylas averages can't show:
We read public map data around Bylas — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Bylas average
How we know this about Bylas
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 Bylas’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 Bylas
When does frost risk typically end in Bylas?
The last hard freeze (28°F) in Bylas typically lands around Feb 22, 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 Mar 15.
When is the first frost in Bylas?
The first hard freeze (28°F) in Bylas typically arrives around Nov 24, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 10, so the watching starts about Oct 25 — about 275 days after the spring freeze cleared.
How long is the growing season in Bylas?
Measured between 28°F hard freezes, Bylas sees about 275 frost-free days — roughly Feb 22 through Nov 24, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 15 to Nov 10, about 240 days.
Is the soil safe to grow vegetables in Bylas?
The federal record around Bylas shows 43 documented sites, mostly Nitrate entries (32), the nearest Mining record about 3.0 miles out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Bylas?
From about Oct 25 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 24 (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 24. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Bylas's scale — its 8b band and its 275-day season. Your yard writes its own version of Bylas'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 Bylas’s own scale
7 of the readings below were taken at Bylas's own scale — its own ~275-day season between 28°F freezes, the 2,676 acres it covers and 43 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Bylas's own USDA hardiness band, zones 8bUSDA PHZM 2023
- Bylas's own 28°F hard-freeze dates, about Feb 22 and Nov 24 and the ~275-day span between themNOAA 1991–2020 Climate Normals
- 43 documented contamination sites on the federal record near Bylas, the closest Mining record about 3.0 miles out from the town centreFederal environmental registers
- Bylas's boundary and the 2,676 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~275-day seasonGrowable Ground crop-matching engine
- Bylas sits in the Sonoran Basin and Range — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- Lanternfly survey cells around Bylas checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Bylas's 2,676 acres read through its county's SSURGO summaryfrom Graham County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Graham County
- The growing challenges every Arizona grower plans around — written at state scale, so they stay on the state guidefrom Arizona
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Graham County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Bylas's 2,676 acreswhy one lot differs from the next →
- Which side of Bylas you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,676 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Mining record about 3.0 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 Bylas-wide figureread your own land →
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