St Peters 2 SE, MO Frost Dates & Growing Season

The two dates every St Peters 2 SE garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Apr 9
~50% chance of frost after
First fall frost
Oct 26
~50% chance of frost before
Growing season
200 days
frost-free stretch
USDA zone
≈ 7a
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Mar 27 Apr 9 Apr 25
First fall frost Nov 7 Oct 26 Oct 14
Hard freeze (28°F), median last Mar 31 · first Nov 5

Computed from NOAA 1991–2020 climate normals at the ST PETERS 2 SE 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 St Peters 2 SE

Computed from St Peters 2 SE's own frost dates. Click any crop for the full zone-7 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Feb 12 – Feb 26 Apr 16 – Apr 23
🫑 Peppers Jan 29 – Feb 12 Apr 23 – Apr 30
🥬 Lettuce Feb 26 – Mar 12 Mar 12 – Mar 26 Mar 12 – Apr 9
🫛 Peas Feb 26 – Mar 12
🥕 Carrots Mar 19 – Apr 9
🥦 Broccoli Feb 19 – Mar 5 Mar 19 – Apr 2
🥬 Kale Feb 26 – Mar 12 Mar 12 – Mar 26 Mar 12 – Mar 26
🥒 Cucumbers Mar 12 – Mar 19 Apr 16 – Apr 23 Apr 16 – Apr 23
🥒 Zucchini Mar 12 – Mar 19 Apr 16 – Apr 23 Apr 16 – Apr 23
🫘 Green Beans (Bush) Apr 16 – Apr 23
🌽 Sweet Corn Apr 16 – Apr 23
🌿 Basil Feb 26 – Mar 12 Apr 16 – Apr 23 Apr 23 – Apr 30
🧄 Garlic Fall: Sep 14 – Oct 12

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 St Peters 2 SE's dates automatically after a lookup.

Reading the season in St Peters 2 SE

With roughly 200 frost-free days, St Peters 2 SE gardens fit long-season crops — melons, winter squash, sweet potatoes — with room left for spring and fall rounds of greens and roots. The first frost around Oct 26 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in St Peters 2 SE, MO?

The average last spring frost in St Peters 2 SE is around Apr 9, 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 St Peters 2 SE, MO?

The average first fall frost in St Peters 2 SE arrives around Oct 26. 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 St Peters 2 SE?

About 200 frost-free days on average, from Apr 9 to Oct 26. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is St Peters 2 SE in?

USDA zone 7a 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.