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When to Plant Beets in Jefferson County, IL

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.

Jefferson County, Illinois is in USDA Zone 6a. The average last spring frost is April 9 and the first fall frost is October 20, giving you a growing season of approximately 194 days.

At an elevation of 509 feet, Jefferson County receives approximately 34 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88ยฐF, providing good warmth for Beets during the growing season.

Jefferson County, IL (Zone 6a) Moderate season
194 days
Last Spring Frost April 9
194 growing days
First Fall Frost October 20

Jefferson County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (108 days to spare)
Transplant: Apr 4 🍅 Harvest: May 30 – Jun 27
Recommended (50%) ✓ Fits season (110 days to spare)
Transplant: Apr 9 🍅 Harvest: Jun 4 – Jul 2
Safe Start (90%) ✓ Fits season (113 days to spare)
Transplant: Apr 19 🍅 Harvest: Jun 14 – Jul 12

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.7″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 547 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Beets needs ~960 GDD — county provides 3,104 GDD Excellent fit

Beets Planting Timeline โ€” Jefferson County, IL

Beets Planting Calendar

Activity When Date Range
Direct Sow March 26 Mar 26 โ€“ Apr 16
Fall Sowing August 11 Aug 11 โ€“ Aug 25
Harvest May 21 May 21 โ€“ Jun 18

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

50โ€“70 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 6a

Growing Season

194 days

Growing Tips for Jefferson 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

Level Up Your Garden

๐ŸŒพ 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 35ยฐF, under 50% humidity.

Isolate 1/2 mile from Swiss chard โ€” same species, they will cross.

Frequently Asked Questions

When should I plant Beets in Jefferson County, IL?

Jefferson County is in Zone 6a with an average last frost of April 9. Plan your Beets planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Jefferson County, IL?

Jefferson County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 9 and first fall frost is October 20.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Jefferson County gardeners in Zone 6a organize planting dates, track what's growing, and never miss a planting window.

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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 Jefferson County, IL. Local conditions may vary. Last updated: April 2026.