Drysdale, Arizona, sits in USDA hardiness zone 10a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect palo verde, citrus, jalapeno, and date palm to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Drysdale, 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 Drysdale 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 Drysdale — soil, climate, flood, and parcel records. How we handle your address.
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Drysdale — the short answer
Drysdale, Arizona: USDA zone 10a, about 316 days between hard freezes, across 105 acres of town.
- USDA zone
- 10a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 29
- Yuma County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 11
- Yuma County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~316
- Yuma County normal — NOAA 1991–2020, nearest to this town
- Town area
- 105 acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Yuma County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 10a is Drysdale's average, not your lot's — a low corner or a tree line moves it. Against Drysdale's 316-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Drysdale
Each reading below is measured for Drysdale itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsDrysdale runs about 316 days between hard freezes (read from Yuma County, the closest normal to Drysdale) — 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
MeasuredDrysdale sits in USDA hardiness zone 10a.
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 Drysdale is in
Drysdale sits in the Sonoran Basin and Range — EPA Level III, inside the wider North American Deserts. That is read at Drysdale's own centroid rather than borrowed from Yuma County.
What Grows in Drysdale
Plants matched to Drysdale's USDA zones 10a, ordered by how much hardiness margin each has here — the ones with room to spare at both ends of this town's band lead. Each links to its full growing profile.
Is it too late to plant in Drysdale?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 29 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 11 — long-season crops need about 90 days of runway, quick greens only 30. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
Documented around Drysdale
Survey cells within 31 miles of Drysdale checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 148 miles off. What to watch for.
What's on the federal record near Drysdale
Closest first, within ~10 miles of Drysdale. Listing isn't leaking, and distance isn't exposure.
- MORGANS STOREUnderground Storage Tanks · 1.7 mi
- YUCO GIN - CRUMP GINUnderground Storage Tanks · 1.7 mi
- C-09-24 13CDDNitrate · 1.8 mi
- GOLDEN FALCON INTL SITESuperfund · 2.7 mi
- QUEST AEROSPACEBrownfields · 3.1 mi
- SOMERTON SCHOOL DISTRICTUnderground Storage Tanks · 3.1 mi
- CITY OF SOMERTON - PUBLIC WORKS YARDUnderground Storage Tanks · 3.2 mi
- C-09-23 30CBA2Nitrate · 3.2 mi
- CASEY & SONS INCUnderground Storage Tanks · 3.3 mi
- SHAY OIL #7Underground Storage Tanks · 3.3 mi
- SHAY OIL - SOMERTONUnderground Storage Tanks · 3.3 mi
- FAMILY DOLLAR #5494Brownfields · 3.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Drysdale'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 Drysdale.
Sources Checked
within ~10 miles of Drysdale
Severity Distribution
within ~10 miles of Drysdale
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Drysdale, two things run higher than the national average within ~10 miles of Drysdale — Superfund (9 sites) and Nitrate (148 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Drysdale
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 Drysdale average
Your land is one point inside Drysdale
Everything above resolves to Drysdale as a whole — one PHZM band, read across 105 acres, with hard-freeze dates borrowed from Yuma County’s record because no 30-year normal resolves at this town’s own centroid. 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 Drysdale Average
Drysdale Average
- ●USDA Zones 10a, averaged across Drysdale
- ●One soil character for all of Drysdale
- ●Frost dates read at Drysdale's scale: Jan 29 to Dec 11
YOUR Parcel
- ✓Your exact zone, not Drysdale's 10a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Drysdale
Pull a site-specific report for your exact address in Drysdale, Arizona — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Drysdale averages can't show:
We read public map data around Drysdale — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Drysdale average
How we know this about Drysdale
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 Yuma County’s record, because none resolves here; 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 Drysdale
When does frost risk typically end in Drysdale?
The last hard freeze (28°F) in Drysdale typically lands around Jan 29, 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 Feb 19.
When is the first frost in Drysdale?
The first hard freeze (28°F) in Drysdale typically arrives around Dec 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 27, so the watching starts about Nov 11 — about 316 days after the spring freeze cleared.
How long is the growing season in Drysdale?
Measured between 28°F hard freezes, Drysdale sees about 316 frost-free days — roughly Jan 29 through Dec 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 19 to Nov 27, about 281 days.
Is the soil safe to grow vegetables in Drysdale?
The federal record around Drysdale is a meaningful one — 512 documented sites, mostly Underground Storage Tanks entries (246), the nearest Underground Storage Tanks record about 1.7 miles 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 Drysdale?
From about Nov 11 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 Dec 11 (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 Dec 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Drysdale's scale — its 10a band and its 316-day season. Your yard writes its own version of Drysdale'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 Drysdale’s own scale
5 of the readings below were taken at Drysdale's own scale — the 105 acres it covers and 512 documented sites around it; 6 are borrowed from a wider read, named and linked below.
Measured here
- Drysdale's own USDA hardiness band, zones 10aUSDA PHZM 2023
- 512 documented contamination sites on the federal record near Drysdale, the closest Underground Storage Tanks record about 1.7 miles out from the town centreFederal environmental registers
- Drysdale's boundary and the 105 acres inside itUS Census TIGER/Line 2025
- The ecoregion at Drysdale's own centroid, the Sonoran Basin and RangeUS EPA Level III Ecoregions
- Lanternfly survey cells around Drysdale checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Drysdale has no normal of its own, so its county's is the closest measured readfrom Yuma County
- Soil character — no town-scale survey exists, so Drysdale's 105 acres read through its county's SSURGO summaryfrom Yuma County
- The candidate plant list — Arizona's curated set, filtered to this zone band and re-ordered by how much margin each has herefrom Arizona
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Yuma 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 Yuma County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Drysdale's 105 acreswhy one lot differs from the next →
- Which side of Drysdale you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 105 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 1.7 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 Drysdale-wide figureread your own land →
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