Crystal River, Florida, sits in USDA hardiness zone 9b — a zone band wide enough that plant choice, not possibility, is the interesting question.
A short list that earns its place here — okra, meyer lemon, california poppy, and artichoke — with any one site's soil, sun, and drainage making the final cut.
Even in Crystal River, 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 Crystal River 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 Crystal River — soil, climate, flood, and parcel records. How we handle your address.
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Crystal River — the short answer
Crystal River, Florida: USDA zone 9b, about 312 days between hard freezes, across 5K acres of city.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 4
- Citrus County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 13
- Citrus County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~312
- Citrus County normal — NOAA 1991–2020, nearest to this town
- City area
- 5K 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 Citrus County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Crystal River's average, not your lot's — a low corner or a tree line moves it. Against Crystal River's 312-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Crystal River
Each reading below is measured for Crystal River itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsCrystal River runs about 312 days between hard freezes (read from Citrus County, the closest normal to Crystal River) — 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
MeasuredCrystal River 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 Crystal River is in
Crystal River sits in the Southern Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Crystal River's own centroid rather than borrowed from Citrus County.
What Grows in Crystal River
Every plant below cleared Crystal River's own zone 9b and its 312-day season. Each card opens that plant's Florida profile. How we score.
Is it too late to plant in Crystal River?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Jan 7; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 13 — 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.
What's on the federal record near Crystal River
Closest first, within ~10 miles of Crystal River. Listing isn't leaking, and distance isn't exposure.
- PETE'S PIER MANAGEMENT LLCUnderground Storage Tanks · 1500 ft
- GIANT #107Underground Storage Tanks · 1800 ft
- DIXIE AUTOMOTIVEUnderground Storage Tanks · 2000 ft
- WAWA #5300Brownfields · 2200 ft
- CHARLIES FISH HOUSE INCUnderground Storage Tanks · 2300 ft
- PETES PIER DOCKSIDEUnderground Storage Tanks · 2300 ft
- THE CRAB PLANT LLCUnderground Storage Tanks · 2400 ft
- CHEVRON-KWIK STOPUnderground Storage Tanks · 0.5 mi
- SUNSHINE MATERIALS-INVERNESS BLOCK PLTUnderground Storage Tanks · 0.6 mi
- SECRET GARDENUnderground Storage Tanks · 0.6 mi
- CRYSTAL RIVER CITYUnderground Storage Tanks · 0.7 mi
- ISLAND FOOD STORE #316Underground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Crystal River'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 Crystal River.
Total Sites
256
within ~10 miles of Crystal River
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Crystal River
Severity Distribution
within ~10 miles of Crystal River
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Crystal River, PFAS runs higher than the national average — 8 sites within ~10 miles of Crystal River. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Crystal River
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 Crystal River average
Your land is one point inside Crystal River
Everything above resolves to Crystal River as a whole — one PHZM band, read across 5K acres, with hard-freeze dates borrowed from Citrus County’s record because no 30-year normal resolves at this city’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 city 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 Crystal River Average
Crystal River Average
- ●USDA Zones 9b, averaged across Crystal River
- ●One soil character for all of Crystal River
- ●Frost dates read at Crystal River's scale: Feb 4 to Dec 13
YOUR Parcel
- ✓Your exact zone, not Crystal River's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Crystal River
Pull a site-specific report for your exact address in Crystal River, Florida — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Crystal River averages can't show:
We read public map data around Crystal River — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Crystal River average
How we know this about Crystal River
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Citrus 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 city grain anywhere on this page — there is no city-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 Crystal River
When does frost risk typically end in Crystal River?
The last hard freeze (28°F) in Crystal River typically lands around Feb 4, 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 25.
When is the first frost in Crystal River?
The first hard freeze (28°F) in Crystal River typically arrives around Dec 13, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 29, so the watching starts about Nov 13 — about 312 days after the spring freeze cleared.
How long is the growing season in Crystal River?
Measured between 28°F hard freezes, Crystal River sees about 312 frost-free days — roughly Feb 4 through Dec 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 25 to Nov 29, about 277 days.
Is the soil safe to grow vegetables in Crystal River?
The federal record around Crystal River is a meaningful one — 256 documented sites, mostly Underground Storage Tanks entries (147), the nearest Underground Storage Tanks record about 0.3 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 Crystal River?
From about Nov 13 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 13 (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 13. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Crystal River's scale — its 9b band and its 312-day season. Your yard writes its own version of Crystal River'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 Crystal River’s own scale
5 of the readings below were taken at Crystal River's own scale — the 4,893 acres it covers and 256 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Crystal River's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 256 documented contamination sites on the federal record near Crystal River, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Crystal River's boundary and the 4,893 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~312-day seasonGrowable Ground crop-matching engine
- The ecoregion at Crystal River's own centroid, the Southern Coastal PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Crystal River has no normal of its own, so its county's is the closest measured readfrom Citrus County
- Soil character — no town-scale survey exists, so Crystal River's 4,893 acres read through its county's SSURGO summaryfrom Citrus County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Citrus 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 Citrus County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Crystal River's 4,893 acreswhy one lot differs from the next →
- Which side of Crystal River you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,893 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Crystal River-wide figureread your own land →
More in Florida
Wider growing context
What grows across FloridaCrystal River sits outside our named growing regions, so Florida as a whole is its closest context here.
Nearby growing guides