When to plant in Kalamazoo, MI
USDA Zone 6aHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Kalamazoo, Michigan — all computed from Kalamazoo's nearest NOAA weather station.
Zone 6a means Kalamazoo sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
Frost probability
KALAMAZOO BATTLE CK INTL AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Kalamazoo’s own odds, recorded at KALAMAZOO BATTLE CK INTL AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 24 | May 8 | Apr 24 | Sep 22 | Oct 6 | Oct 19 |
| 32°F | May 13 | Apr 28 | Apr 13 | Oct 2 | Oct 18 | Nov 1 |
| 28°F | May 3 | Apr 17 | Apr 3 | Oct 16 | Nov 1 | Nov 14 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Kalamazoo, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 28 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Kalamazoo planting FAQ
When is the last spring frost in Kalamazoo, MI?
Kalamazoo's average last spring frost falls near April 28 — the 50% mark at 32°F in the 1991–2020 normals. Hold tender transplants until the risk has passed, then plant out.
When is the first fall frost in Kalamazoo, MI?
Expect Kalamazoo's first fall frost near October 18 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Kalamazoo in?
Kalamazoo is in USDA hardiness zone 6a. In zone 6a, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Kalamazoo?
There are roughly 173 frost-free days in Kalamazoo (a moderate growing season), running from the average last frost around April 28 to the first fall frost near October 18.
When should I plant tomatoes in Kalamazoo?
In Kalamazoo, start tomato seeds indoors around March 3–March 17, then transplant seedlings outdoors around May 5 once the danger of frost has passed.
Never miss a window in Kalamazoo
An email when it’s time to start seeds, transplant, and sow — timed to Kalamazoo’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Portage · 9 km
- Battle Creek · 30 km
- Sturgis · 55 km
- Coldwater · 61 km
- Cutlerville · 63 km
- Kentwood · 68 km
- Holland · 69 km
- Wyoming · 69 km
Frost dates recorded at KALAMAZOO BATTLE CK INTL AP, 5 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Kalamazoo, MI — Frost Dates & Zone 6a." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00094815. Retrieved from https://blissgarden.com/michigan/kalamazoo.