Greendale, Missouri, sits in USDA hardiness zone 7a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
These conditions suit cabbage, hazelnut, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Greendale, 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 Greendale 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 Greendale — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Greendale — the short answer
Greendale, Missouri: USDA zone 7a, about 247 days between hard freezes, across 123 acres of city.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~247
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 123 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 7a is Greendale's average, not your lot's — a low corner or a tree line moves it. Against Greendale's 247-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Greendale
Each reading below is measured for Greendale itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGreendale runs about 247 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredGreendale sits in USDA hardiness zone 7a.
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 Greendale is in
Greendale sits in the Interior River Valleys and Hills — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Greendale's own centroid rather than borrowed from St. Louis County.
What Grows in Greendale
Every plant below cleared Greendale's own zone 7a and its 247-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Greendale?
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 Feb 18; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 20 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Documented around Greendale
Survey cells within 31 miles of Greendale checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 240 miles off. What to watch for.
What's on the federal record near Greendale
Closest first, within ~10 miles of Greendale. Listing isn't leaking, and distance isn't exposure.
- BEACH ELECTRIC COMPANYUnderground Storage Tanks · 1000 ft
- T46N R06E 26CAA1Nitrate · 1100 ft
- ST VINCENT'S PARKUnderground Storage Tanks · 1900 ft
- HAWTHORN CHILDRENS PSY HOSPITALUnderground Storage Tanks · 0.5 mi
- GAS MART 5Underground Storage Tanks · 0.5 mi
- ABLE INDUSTRIESUnderground Storage Tanks · 0.6 mi
- AMARETTO INCUnderground Storage Tanks · 0.7 mi
- HARTMAN WALSH PAINTING COBrownfields · 0.7 mi
- MARVINS SERVICEUnderground Storage Tanks · 0.7 mi
- FRISON FLEA MARKETUnderground Storage Tanks · 0.8 mi
- SERVICE STATIONUnderground Storage Tanks · 0.9 mi
- EDGCOMB METALS COMPANYUnderground Storage Tanks · 0.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Greendale'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 Greendale.
Sources Checked
within ~10 miles of Greendale
Severity Distribution
within ~10 miles of Greendale
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Greendale, two things run higher than the national average within ~10 miles of Greendale — Toxics Release Inventory (361 sites) and Superfund (62 sites). That's not a problem with your land — it's information about it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Greendale
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 Greendale average
Your land is one point inside Greendale
Everything above resolves to Greendale as a whole — one PHZM band and one 28°F frost record, read across 123 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 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 Greendale Average
Greendale Average
- ●USDA Zones 7a, averaged across Greendale
- ●One soil character for all of Greendale
- ●Frost dates read at Greendale's scale: Mar 18 to Nov 20
YOUR Parcel
- ✓Your exact zone, not Greendale's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Greendale
Pull a site-specific report for your exact address in Greendale, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Greendale averages can't show:
We read public map data around Greendale — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Greendale average
How we know this about Greendale
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 Greendale’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 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 Greendale
When does frost risk typically end in Greendale?
The last hard freeze (28°F) in Greendale typically lands around Mar 18, 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 Apr 8.
When is the first frost in Greendale?
The first hard freeze (28°F) in Greendale typically arrives around Nov 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 6, so the watching starts about Oct 21 — about 247 days after the spring freeze cleared.
How long is the growing season in Greendale?
Measured between 28°F hard freezes, Greendale sees about 247 frost-free days — roughly Mar 18 through Nov 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 8 to Nov 6, about 212 days.
Is the soil safe to grow vegetables in Greendale?
The federal record around Greendale runs heavier than most — 4,522 documented sites, mostly Underground Storage Tanks entries (2,754), the nearest Underground Storage Tanks record about 0.2 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Greendale?
From about Oct 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 Nov 20 (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 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Greendale's scale — its 7a band and its 247-day season. Your yard writes its own version of Greendale'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 Greendale’s own scale
7 of the readings below were taken at Greendale's own scale — its own ~247-day season between 28°F freezes, the 123 acres it covers and 4,522 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Greendale's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Greendale's own 28°F hard-freeze dates, about Mar 18 and Nov 20 and the ~247-day span between themNOAA 1991–2020 Climate Normals
- 4,522 documented contamination sites on the federal record near Greendale, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Greendale's boundary and the 123 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~247-day seasonGrowable Ground crop-matching engine
- The ecoregion at Greendale's own centroid, the Interior River Valleys and HillsUS EPA Level III Ecoregions
- Lanternfly survey cells around Greendale 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 Greendale's 123 acres read through its county's SSURGO summaryfrom St. Louis County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom St. Louis County
- The growing challenges every Missouri grower plans around — written at state scale, so they stay on the state guidefrom Missouri
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom St. Louis County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Greendale's 123 acreswhy one lot differs from the next →
- Which side of Greendale you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 123 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Greendale-wide figureread your own land →
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