When to plant in Allen Park, MI
USDA Zone 6bHere are the average frost dates, USDA hardiness zone, and a month-by-month planting calendar for Allen Park, Michigan — all computed from Allen Park's nearest NOAA weather station.
In zone 6b, Allen Park gardeners can grow many hardy perennials, while the last and first frost still dictate the annual vegetable calendar.
Frost probability
DEARBORN · 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 Allen Park’s own odds, recorded at DEARBORN.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 27 | May 12 | Apr 27 | Sep 24 | Oct 5 | Oct 18 |
| 32°F | May 18 | May 1 | Apr 17 | Oct 1 | Oct 15 | Oct 28 |
| 28°F | May 7 | Apr 20 | Apr 5 | Oct 13 | Oct 28 | Nov 12 |
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 Allen Park, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 10 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.
Allen Park planting FAQ
When is the last spring frost in Allen Park, MI?
On average, the last spring frost in Allen Park is around May 1 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Allen Park, MI?
In Allen Park, the first 32°F freeze of fall lands around October 15 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Allen Park in?
Allen Park is in USDA hardiness zone 6b. In zone 6b, winters are moderate — most common vegetables grow well in season.
How long is the growing season in Allen Park?
Allen Park has about 167 frost-free days — a moderate growing season — between the average last spring frost (May 1) and first fall frost (October 15).
When should I plant tomatoes in Allen Park?
For Allen Park, sow tomatoes indoors about March 6–March 20 and move the seedlings out around May 8, after the last spring frost.
Never miss a window in Allen Park
An email when it’s time to start seeds, transplant, and sow — timed to Allen Park’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Lincoln Park · 3 km
- Melvindale · 3 km
- Dearborn · 6 km
- Taylor · 6 km
- Southgate · 6 km
- Wyandotte · 7 km
- Riverview · 10 km
- Inkster · 10 km
Frost dates recorded at DEARBORN, 7 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 Allen Park, MI — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00202015. Retrieved from https://blissgarden.com/michigan/allen-park.