Dorset, OH Frost Dates & Growing Season

The two dates every Dorset garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
May 10
~50% chance of frost after
First fall frost
Oct 10
~50% chance of frost before
Growing season
153 days
frost-free stretch
USDA zone
≈ 6b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Apr 25 May 10 May 27
First fall frost Oct 27 Oct 10 Sep 26
Hard freeze (28°F), median last Apr 28 · first Oct 26

Computed from NOAA 1991–2020 climate normals at the DORSET station. "Safe" means frost past that date happens only about one year in ten. Your exact garden can still run days either way with elevation and terrain — check your own ZIP with the frost date lookup.

Planting windows for Dorset

Computed from Dorset's own frost dates. Click any crop for the full zone-6 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Mar 15 – Mar 29 May 17 – May 24
🫑 Peppers Mar 1 – Mar 15 May 24 – May 31
🥬 Lettuce Mar 29 – Apr 12 Apr 12 – Apr 26 Apr 12 – May 10
🫛 Peas Mar 29 – Apr 12
🥕 Carrots Apr 19 – May 10
🥦 Broccoli Mar 22 – Apr 5 Apr 19 – May 3
🥬 Kale Mar 29 – Apr 12 Apr 12 – Apr 26 Apr 12 – Apr 26
🥒 Cucumbers Apr 12 – Apr 19 May 17 – May 24 May 17 – May 24
🥒 Zucchini Apr 12 – Apr 19 May 17 – May 24 May 17 – May 24
🫘 Green Beans (Bush) May 17 – May 24
🌽 Sweet Corn May 17 – May 24
🌿 Basil Mar 29 – Apr 12 May 17 – May 24 May 24 – May 31
🧄 Garlic Fall: Aug 29 – Sep 26

Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Dorset's dates automatically after a lookup.

Reading the season in Dorset

Roughly 153 frost-free days gives Dorset gardeners room for nearly every common vegetable. Warm-season crops go out after May 10; a fall garden sown in late summer matures comfortably before the Oct 10 frost.

Frequently asked questions

When is the last frost in Dorset, OH?

The average last spring frost in Dorset is around May 10, based on 1991–2020 climate normals. That's a median — about half of years see a later frost, so tender crops are safest going out a week or two after this date.

When is the first frost in Dorset, OH?

The average first fall frost in Dorset arrives around Oct 10. Crops still in the garden need to mature before then, and frost-tender plants need harvesting or protection as the date approaches.

How long is the growing season in Dorset?

About 153 frost-free days on average, from May 10 to Oct 10. That fits nearly all common vegetables, though the longest-season melons and sweet potatoes benefit from transplants.

What USDA zone is Dorset in?

USDA zone 6b on the 2023 Plant Hardiness Zone Map. Note that zones describe winter cold, not frost timing — these frost dates are the numbers to plan plantings around.