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When to Plant Beets in Warren County, IA

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.

Warren County, Iowa is in USDA Zone 5a. The average last spring frost is April 26 and the first fall frost is October 9, giving you a growing season of approximately 166 days.

At an elevation of 853 feet, Warren County receives approximately 30.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87ยฐF, providing good warmth for Beets during the growing season.

Warren County, IA (Zone 5a) Moderate season
166 days
Last Spring Frost April 26
166 growing days
First Fall Frost October 9

Warren County Soil Profile

Soil Type

Silt Loam

Soil pH

5.9-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (84 days to spare)
Transplant: Apr 18 🍅 Harvest: Jun 13 – Jul 11
Recommended (50%) ✓ Fits season (82 days to spare)
Transplant: Apr 26 🍅 Harvest: Jun 21 – Jul 19
Safe Start (90%) ✓ Fits season (82 days to spare)
Transplant: May 11 🍅 Harvest: Jul 6 – Aug 3

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
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 337 gal / 100 sq ft
Beets needs ~915 GDD — county provides 2,531 GDD Excellent fit

Beets Planting Timeline โ€” Warren County, IA

Beets Planting Calendar

Activity When Date Range
Direct Sow April 12 Apr 12 โ€“ May 3
Fall Sowing July 31 Jul 31 โ€“ Aug 14
Harvest June 7 Jun 7 โ€“ Jul 5

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May Direct Sow
June Harvest
July Fall Sowing Harvest
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 5a

Growing Season

166 days

Growing Tips for Warren 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 Warren County, IA?

Warren County is in Zone 5a with an average last frost of April 26. Plan your Beets planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Warren County, IA?

Warren County, Iowa is in USDA Hardiness Zone 5a. The average last spring frost is April 26 and first fall frost is October 9.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Warren County gardeners in Zone 5a 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 Warren County, IA. Local conditions may vary. Last updated: April 2026.