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When to plant Beets in St. Charles County, MO

Aim to plant Beets in St. Charles County on or after March 30; the window stays open through April 20. St. Charles County's 194-day frost-free season gives you enough for a full main crop and a short fall succession. A second sowing from August 15 to August 29 extends the harvest into fall.

When to Plant Beets in St. Charles County, MO

Beets

Beets are a dual-purpose root vegetable with edible roots and nutritious greens. They come in red, golden, and striped varieties and are rich in vitamins and minerals.

St. Charles County, Missouri is in USDA Zone 6b. The average last spring frost is April 13 and the first fall frost is October 24, giving you a growing season of approximately 194 days.

At an elevation of 1,295 feet, St. Charles County receives approximately 33.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Beets during the growing season.

St. Charles County, MO (Zone 6b) Moderate season
194 days
Last Spring Frost April 13
194 growing days
First Fall Frost October 24

St. Charles County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Beets Planting Timeline — St. Charles County, MO

Beets Planting Calendar

Activity When Date Range
Direct Sow March 30 Mar 30 – Apr 20
Harvest May 25 May 25 – Jun 22
Fall Sowing August 15 Aug 15 – Aug 29

Plant 0.5" deep · 4" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February
March Direct Sow
April Direct Sow
May Harvest
June Harvest
July
August Fall Sowing
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: N/A

🗺️ USDA Zone

Zone 6b

📆 Growing Season

194 days in St. Charles County

Growing Tips for St. Charles County

Soak seeds overnight before planting to improve germination. Thin seedlings to 3-4 inches apart. Harvest roots when 1.5-3 inches in diameter for best texture.

Companion Planting

Good Companions

Avoid Planting Near

  • Pole Beans
  • Mustard Greens

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Beets Seeds
Life Cycle Biennial
Pollination Wind Pollinated
How to Collect Replant roots for 2nd-year seeds. Rub stalks to free clusters.
Storage Store airtight; viable 6 years at 35°F, under 50% humidity.

Isolate 1/2 mile from Swiss chard — same species, they will cross.

Frequently Asked Questions

When should I plant Beets in St. Charles County, MO?

St. Charles County is in Zone 6b with an average last frost of April 13. Plan your Beets planting based on this frost date — see the calendar above for exact timing.

What planting zone is St. Charles County, MO?

St. Charles County, Missouri is in USDA Hardiness Zone 6b. The average last spring frost is April 13 and first fall frost is October 24.

When should I plant Beets in St. Charles County, MO?

In St. Charles County, MO, plant Beets after the last frost (around April 13) and before the first frost (around October 24). Best results when soil holds above 50°F.

What growing zone is St. Charles County, MO for Beets?

St. Charles County sits in USDA Zone 6b. Beets grows reliably in zones 2a through 11b, so it's a good fit here.

Can Beets grow in St. Charles County's climate?

Yes — Beets grows well in St. Charles County's temperate climate. St. Charles County averages a 194-day frost-free season, with last frost around April 13 and first frost around October 24.

🌱

Your St. Charles County Garden Planner — Free

A 22-page printable planner built for St. Charles County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for St. Charles County, MO. Local conditions may vary. Last updated: June 2026.

Sources & credits

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