Union Park, Florida, sits in USDA hardiness zone 10a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
These conditions suit okra, meyer lemon, california poppy, and artichoke — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Union Park, 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 Union Park 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 Union Park — soil, climate, flood, and parcel records. How we handle your address.
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Union Park — the short answer
Union Park, Florida: USDA zone 10a, about 335 days between hard freezes, across 2K acres of town.
- USDA zone
- 10a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 20
- Orange County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 21
- Orange County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~335
- Orange 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 Orange County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 10a is Union Park's average, not your lot's — a low corner or a tree line moves it. Against Union Park's 335-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Union Park
Each reading below is measured for Union Park itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsUnion Park runs about 335 days between hard freezes (read from Orange County, the closest normal to Union Park) — 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
MeasuredUnion Park 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 Union Park is in
Union Park sits in the Southern Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Union Park's own centroid rather than borrowed from Orange County.
What Grows in Union Park
Every plant below cleared Union Park's own zone 10a and its 335-day season. Each card opens that plant's Florida profile. How we score.
Is it too late to plant in Union Park?
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 20 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 21 — 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.
What's on the federal record near Union Park
Closest first, within ~10 miles of Union Park. Listing isn't leaking, and distance isn't exposure.
- O'REILLY AUTO PARTS #4611Brownfields · 1200 ft
- DOWNEY FOOD MARTUnderground Storage Tanks · 1400 ft
- GOODYEAR DEALER EXPANSION #9468Underground Storage Tanks · 1500 ft
- COLONIAL AUTO MARTUnderground Storage Tanks · 1600 ft
- ACTION GATOR TIREBrownfields · 1600 ft
- CUMBERLAND FARMS #0952Underground Storage Tanks · 1900 ft
- UNION PARK DRY CLEANERSBrownfields · 2100 ft
- TEXACO MARTUnderground Storage Tanks · 2100 ft
- THANK YOU COME AGAINUnderground Storage Tanks · 2300 ft
- CHEVRON #47786Underground Storage Tanks · 2300 ft
- BP AMOCO #6315Underground Storage Tanks · 2300 ft
- UNION PARK ELEMENTARY SCHOOLBrownfields · 2400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Union Park'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 Union Park.
Sources Checked
within ~10 miles of Union Park
Severity Distribution
within ~10 miles of Union Park
Highest-Severity Sites
Know Before You Grow
- •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.
- •TRI facilities report what they release. Check the wind — downwind beds catch more of it.
Check your specific parcel in Union Park
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 Union Park average
Your land is one point inside Union Park
Everything above resolves to Union Park as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Orange 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 Union Park Average
Union Park Average
- ●USDA Zones 10a, averaged across Union Park
- ●One soil character for all of Union Park
- ●Frost dates read at Union Park's scale: Jan 20 to Dec 21
YOUR Parcel
- ✓Your exact zone, not Union Park's 10a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Union Park
Pull a site-specific report for your exact address in Union Park, Florida — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Union Park averages can't show:
We read public map data around Union Park — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Union Park average
How we know this about Union Park
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 Orange 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 Union Park
When does frost risk typically end in Union Park?
The last hard freeze (28°F) in Union Park typically lands around Jan 20, 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 10.
When is the first frost in Union Park?
The first hard freeze (28°F) in Union Park typically arrives around Dec 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Dec 7, so the watching starts about Nov 21 — about 335 days after the spring freeze cleared.
How long is the growing season in Union Park?
Measured between 28°F hard freezes, Union Park sees about 335 frost-free days — roughly Jan 20 through Dec 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 10 to Dec 7, about 300 days.
Is the soil safe to grow vegetables in Union Park?
The federal record around Union Park is a meaningful one — 1,969 documented sites, mostly Underground Storage Tanks entries (1,152), the nearest Brownfields record about 0.2 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 Union Park?
From about Nov 21 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Union Park's scale — its 10a band and its 335-day season. Your yard writes its own version of Union Park'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 Union Park’s own scale
5 of the readings below were taken at Union Park's own scale — the 1,824 acres it covers and 1,969 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Union Park's own USDA hardiness band, zones 10aUSDA PHZM 2023
- 1,969 documented contamination sites on the federal record near Union Park, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Union Park's boundary and the 1,824 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 10a and a ~335-day seasonGrowable Ground crop-matching engine
- The ecoregion at Union Park's own centroid, the Southern Coastal PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Union Park has no normal of its own, so its county's is the closest measured readfrom Orange County
- Soil character — no town-scale survey exists, so Union Park's 1,824 acres read through its county's SSURGO summaryfrom Orange County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Orange County
- The growing challenges every Florida grower plans around — written at state scale, so they stay on the state guidefrom Florida
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Orange County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Union Park's 1,824 acreswhy one lot differs from the next →
- Which side of Union Park you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,824 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Union Park-wide figureread your own land →
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