Jenison, Michigan, sits in USDA hardiness zone 6a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
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 Jenison, 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 Jenison 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 Jenison — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Jenison — the short answer
Jenison, Michigan: USDA zone 6a, about 195 days between hard freezes, across 4K acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 20
- 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
- ~195
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 4K 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 Jenison's average, not your lot's — a low corner or a tree line moves it. Against Jenison's 195-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Jenison
Each reading below is measured for Jenison itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredJenison runs about 195 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredJenison 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 Jenison is in
Jenison sits in the Southern Michigan/Northern Indiana Drift Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Jenison's own centroid rather than borrowed from Ottawa County.
What Grows in Jenison
Every plant below cleared Jenison's own zone 6a and its 195-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Jenison?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 20 (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. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
Documented around Jenison
Survey cells within 31 miles of Jenison checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 64 miles off. What to watch for.
What's on the federal record near Jenison
Closest first, within ~10 miles of Jenison. Listing isn't leaking, and distance isn't exposure.
- SPEEDWAY LLCBrownfields · 1900 ft
- METRO HEALTH ENTERPRISEBrownfields · 1900 ft
- Speedway #5493Underground Storage Tanks · 1900 ft
- Jenison MobilUnderground Storage Tanks · 2200 ft
- MEIJER GAS STATION 26Brownfields · 0.6 mi
- ADVANTAGE HEALTH-SAINT MARY'S MEDICAL GROUPBrownfields · 0.6 mi
- PLEOTINT LLCBrownfields · 0.7 mi
- PARADIGN PLUS LLCBrownfields · 0.7 mi
- FABRI-TECH INCBrownfields · 0.8 mi
- Kerkstra Precaso IncUnderground Storage Tanks · 0.8 mi
- ROSEWOOD AUTO SERVICE INCBrownfields · 0.8 mi
- Hap Hoekwater & Sons, IncUnderground Storage Tanks · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Jenison'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 Jenison.
Sources Checked
within ~10 miles of Jenison
Severity Distribution
within ~10 miles of Jenison
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Jenison, Toxics Release Inventory runs higher than the national average — 155 sites within ~10 miles of Jenison. 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.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Jenison
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 Jenison average
Your land is one point inside Jenison
Everything above resolves to Jenison as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Jenison Average
Jenison Average
- ●USDA Zones 6a, averaged across Jenison
- ●One soil character for all of Jenison
- ●Frost dates read at Jenison's scale: Apr 20 to Nov 1
YOUR Parcel
- ✓Your exact zone, not Jenison's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Jenison
Pull a site-specific report for your exact address in Jenison, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Jenison averages can't show:
We read public map data around Jenison — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Jenison average
How we know this about Jenison
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 Jenison’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 Jenison
When does frost risk typically end in Jenison?
The last hard freeze (28°F) in Jenison typically lands around Apr 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 May 11.
When is the first frost in Jenison?
The first hard freeze (28°F) in Jenison 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 195 days after the spring freeze cleared.
How long is the growing season in Jenison?
Measured between 28°F hard freezes, Jenison sees about 195 frost-free days — roughly Apr 20 through Nov 1, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 11 to Oct 18, about 160 days.
Is the soil safe to grow vegetables in Jenison?
The federal record around Jenison runs heavier than most — 2,118 documented sites, mostly Brownfields entries (984), the nearest Brownfields record about 0.4 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 Jenison?
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 Jenison's scale — its 6a band and its 195-day season. Your yard writes its own version of Jenison'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 Jenison’s own scale
7 of the readings below were taken at Jenison's own scale — its own ~195-day season between 28°F freezes, the 3,747 acres it covers and 2,118 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Jenison's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Jenison's own 28°F hard-freeze dates, about Apr 20 and Nov 1 and the ~195-day span between themNOAA 1991–2020 Climate Normals
- 2,118 documented contamination sites on the federal record near Jenison, the closest Brownfields record about 0.4 miles out from the town centreFederal environmental registers
- Jenison's boundary and the 3,747 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~195-day seasonGrowable Ground crop-matching engine
- The ecoregion at Jenison's own centroid, the Southern Michigan/Northern Indiana Drift PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Jenison 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 Jenison's 3,747 acres read through its county's SSURGO summaryfrom Ottawa County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ottawa County
- The growing challenges every Michigan grower plans around — written at state scale, so they stay on the state guidefrom Michigan
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Ottawa County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Jenison's 3,747 acreswhy one lot differs from the next →
- Which side of Jenison you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,747 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.4 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 Jenison-wide figureread your own land →
More in Michigan
Growing region
Nearby growing guides