When to plant in Sylvania, OH
USDA Zone 6bEverything below — frost dates, hardiness zone, and what to plant when in Sylvania, Ohio — is derived from the closest NOAA station with complete climate normals.
Heads up: the nearest complete-normals station is about 16 km from Sylvania, so your yard's frost dates can differ — a low spot or a paved city center can shift them by a week. Zone 6b means Sylvania sees real winter cold, but a good range of perennials survive; the frost dates above govern when annual vegetables go out.
The average first fall frost in Sylvania is now 11 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
TOLEDO EXPRESS 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 Sylvania’s own odds, recorded at TOLEDO EXPRESS AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 16 | May 1 | Apr 17 | Sep 30 | Oct 13 | Oct 26 |
| 32°F | May 7 | Apr 22 | Apr 6 | Oct 11 | Oct 24 | Nov 8 |
| 28°F | Apr 25 | Apr 8 | Mar 26 | Oct 23 | Nov 4 | Nov 20 |
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 Sylvania, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 25 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.
Sylvania planting FAQ
When is the last spring frost in Sylvania, OH?
Plan for the last spring frost in Sylvania around April 22 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Sylvania, OH?
In Sylvania, the first 32°F freeze of fall lands around October 24 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Sylvania in?
Sylvania 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 Sylvania?
There are roughly 185 frost-free days in Sylvania (a moderate growing season), running from the average last frost around April 22 to the first fall frost near October 24.
When should I plant tomatoes in Sylvania?
In Sylvania, start tomato seeds indoors around February 25–March 11, then transplant seedlings outdoors around April 29 once the danger of frost has passed.
Never miss a window in Sylvania
An email when it’s time to start seeds, transplant, and sow — timed to Sylvania’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Toledo · 12 km
- Maumee · 16 km
- Perrysburg · 20 km
- Oregon · 23 km
- Adrian · 35 km
- Monroe · 35 km
- Bowling Green · 37 km
- Flat Rock · 56 km
Frost dates recorded at TOLEDO EXPRESS AP, 16 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 Sylvania, OH — Frost Dates & Zone 6b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00094830. Retrieved from https://blissgarden.com/ohio/sylvania.