Lompico, California, sits in USDA hardiness zone 9b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Growers here do well with okra, meyer lemon, california poppy, and artichoke — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Lompico, 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 Lompico 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 Lompico — soil, climate, flood, and parcel records. How we handle your address.
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Lompico — the short answer
Lompico, California: USDA zone 9b, about 333 days between hard freezes, across 2K acres of town.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 17
- Santa Cruz County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 16
- Santa Cruz County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~333
- Santa Cruz County normal — NOAA 1991–2020, nearest to this town
- Town area
- 2K 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 Santa Cruz County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Lompico's average, not your lot's — a low corner or a tree line moves it. Against Lompico's 333-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Lompico
Each reading below is measured for Lompico itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsLompico runs about 333 days between hard freezes (read from Santa Cruz County, the closest normal to Lompico) — 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
MeasuredLompico sits in USDA hardiness zone 9b.
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 Lompico is in
Lompico sits in the Coast Range — EPA Level III, inside the wider Marine West Coast Forest. That is read at Lompico's own centroid rather than borrowed from Santa Cruz County.
What Grows in Lompico
Every plant below cleared Lompico's own zone 9b and its 333-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Lompico?
Usually not — gardeners here simply switch what goes in the ground as the season moves. 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 17 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 16 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
What's on the federal record near Lompico
Closest first, within ~10 miles of Lompico. Listing isn't leaking, and distance isn't exposure.
- 010S002W03A001MNitrate · 1.3 mi
- SLVWD - FELTON WATER SYSTEMPFAS · 2.1 mi
- SANTA CRUZ COUNTY-PUBLIC WORKSBrownfields · 2.2 mi
- BLANCA URIBEBrownfields · 2.2 mi
- SLVUSD - TRANSPORTATION DEPTUnderground Storage Tanks · 2.4 mi
- 010S002W10C001MNitrate · 2.4 mi
- PACIFIC BELLBrownfields · 2.5 mi
- AT&T California - NF009Underground Storage Tanks · 2.5 mi
- GRANITE ROCK COMPANYBrownfields · 2.5 mi
- BEN LOMOND GASUnderground Storage Tanks · 2.7 mi
- 5 RIDGEWOOD DRIVEBrownfields · 2.7 mi
- JULIANNA FISHMANBrownfields · 2.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Lompico'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 Lompico.
Sources Checked
within ~10 miles of Lompico
Severity Distribution
within ~10 miles of Lompico
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Lompico, Brownfields runs higher than the national average — 615 sites within ~10 miles of Lompico. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Lompico
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 Lompico average
Your land is one point inside Lompico
Everything above resolves to Lompico as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Santa Cruz 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 Lompico Average
Lompico Average
- ●USDA Zones 9b, averaged across Lompico
- ●One soil character for all of Lompico
- ●Frost dates read at Lompico's scale: Jan 17 to Dec 16
YOUR Parcel
- ✓Your exact zone, not Lompico's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Lompico
Pull a site-specific report for your exact address in Lompico, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Lompico averages can't show:
We read public map data around Lompico — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Lompico average
How we know this about Lompico
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 Santa Cruz 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 Lompico
When does frost risk typically end in Lompico?
The last hard freeze (28°F) in Lompico typically lands around Jan 17, 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 7.
When is the first frost in Lompico?
The first hard freeze (28°F) in Lompico typically arrives around Dec 16, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Dec 2, so the watching starts about Nov 16 — about 333 days after the spring freeze cleared.
How long is the growing season in Lompico?
Measured between 28°F hard freezes, Lompico sees about 333 frost-free days — roughly Jan 17 through Dec 16, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 7 to Dec 2, about 298 days.
Is the soil safe to grow vegetables in Lompico?
The federal record around Lompico is a meaningful one — 736 documented sites, mostly Brownfields entries (615), the nearest Nitrate record about 1.3 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 Lompico?
From about Nov 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 Dec 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 Dec 16. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Lompico's scale — its 9b band and its 333-day season. Your yard writes its own version of Lompico'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 Lompico’s own scale
5 of the readings below were taken at Lompico's own scale — the 2,162 acres it covers and 736 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Lompico's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 736 documented contamination sites on the federal record near Lompico, the closest Nitrate record about 1.3 miles out from the town centreFederal environmental registers
- Lompico's boundary and the 2,162 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~333-day seasonGrowable Ground crop-matching engine
- The ecoregion at Lompico's own centroid, the Coast RangeUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Lompico has no normal of its own, so its county's is the closest measured readfrom Santa Cruz County
- Soil character — no town-scale survey exists, so Lompico's 2,162 acres read through its county's SSURGO summaryfrom Santa Cruz County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Santa Cruz County
- The growing challenges every California grower plans around — written at state scale, so they stay on the state guidefrom California
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Santa Cruz County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Lompico's 2,162 acreswhy one lot differs from the next →
- Which side of Lompico you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,162 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 1.3 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 Lompico-wide figureread your own land →