Excello, Missouri, sits in USDA hardiness zone 6a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
A short list that earns its place here — cabbage, hazelnut, lavender, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Excello, 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 Excello 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 Excello — soil, climate, flood, and parcel records. How we handle your address.
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Excello — the short answer
Excello, Missouri: USDA zone 6a, about 213 days between hard freezes, across 218 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~213
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 218 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 6a is Excello's average, not your lot's — a low corner or a tree line moves it. Against Excello's 213-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Excello
Each reading below is measured for Excello itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredExcello runs about 213 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
MeasuredExcello sits in USDA hardiness zone 6a.
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 Excello is in
Excello sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at Excello's own centroid rather than borrowed from Macon County.
What Grows in Excello
Every plant below cleared Excello's own zone 6a and its 213-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Excello?
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 Mar 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 1 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
What's on the federal record near Excello
Closest first, within ~10 miles of Excello. Listing isn't leaking, and distance isn't exposure.
- UNKNOWN/ACROSS ST FROM POUnderground Storage Tanks · 1400 ft
- T56N R14W 07CCA1Nitrate · 3.5 mi
- T56N R14W 07CCC1Nitrate · 3.6 mi
- T56N R15W 07CCB1Nitrate · 3.7 mi
- T56N R15W 12DDD1Nitrate · 3.7 mi
- T56N R14W 07CBC1Nitrate · 3.7 mi
- T56N R15W 12DDA1Nitrate · 3.7 mi
- SOUTHWESTERN BELLUnderground Storage Tanks · 4.1 mi
- T56N R14W 06DAA6Nitrate · 4.2 mi
- T56N R14W 05BDB1Nitrate · 4.3 mi
- T56N R15W 26BAB1Nitrate · 4.4 mi
- T56N R14W 06AAD1Nitrate · 4.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Excello'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 Excello.
Total Sites
106
within ~10 miles of Excello
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Excello
Severity Distribution
within ~10 miles of Excello
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Excello, two things run higher than the national average within ~10 miles of Excello — CAFO (3 sites) and Nitrate (32 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Excello
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 Excello average
Your land is one point inside Excello
Everything above resolves to Excello as a whole — one PHZM band and one 28°F frost record, read across 218 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 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 Excello Average
Excello Average
- ●USDA Zones 6a, averaged across Excello
- ●One soil character for all of Excello
- ●Frost dates read at Excello's scale: Apr 2 to Nov 1
YOUR Parcel
- ✓Your exact zone, not Excello's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Excello
Pull a site-specific report for your exact address in Excello, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Excello averages can't show:
We read public map data around Excello — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Excello average
How we know this about Excello
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 Excello’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 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 Excello
When does frost risk typically end in Excello?
The last hard freeze (28°F) in Excello typically lands around Apr 2, 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 23.
When is the first frost in Excello?
The first hard freeze (28°F) in Excello typically arrives around Nov 1, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 18, so the watching starts about Oct 2 — about 213 days after the spring freeze cleared.
How long is the growing season in Excello?
Measured between 28°F hard freezes, Excello sees about 213 frost-free days — roughly Apr 2 through Nov 1, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 23 to Oct 18, about 178 days.
Is the soil safe to grow vegetables in Excello?
The federal record around Excello is a meaningful one — 106 documented sites, mostly Underground Storage Tanks entries (48), 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 Excello?
From about Oct 2 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 1 (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 1. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Excello's scale — its 6a band and its 213-day season. Your yard writes its own version of Excello'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 Excello’s own scale
6 of the readings below were taken at Excello's own scale — its own ~213-day season between 28°F freezes, the 218 acres it covers and 106 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Excello's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Excello's own 28°F hard-freeze dates, about Apr 2 and Nov 1 and the ~213-day span between themNOAA 1991–2020 Climate Normals
- 106 documented contamination sites on the federal record near Excello, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Excello's boundary and the 218 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~213-day seasonGrowable Ground crop-matching engine
- The ecoregion at Excello's own centroid, the Central Irregular PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Excello's 218 acres read through its county's SSURGO summaryfrom Macon County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Macon 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 Macon County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Excello's 218 acreswhy one lot differs from the next →
- Which side of Excello you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 218 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 Excello-wide figureread your own land →
More in Missouri
Wider growing context
What grows across MissouriExcello sits outside our named growing regions, so Missouri as a whole is its closest context here.
Nearby growing guides