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When to Plant Carrots in Holt County, MO

Carrots are a popular root vegetable available in orange, purple, white, and yellow varieties. They are rich in beta-carotene and have a sweet, earthy flavor.

Holt County, Missouri is in USDA Zone 5b. The average last spring frost is April 21 and the first fall frost is October 15, giving you a growing season of approximately 177 days.

At an elevation of 819 feet, Holt County receives approximately 39.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Carrots to ensure they mature before fall.

Holt County, MO (Zone 5b) Moderate season
177 days
Last Spring Frost April 21
177 growing days
First Fall Frost October 15

Holt County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (78 days to spare)
Transplant: Apr 14 🍅 Harvest: Jun 16 – Jul 21
Recommended (50%) ✓ Fits season (79 days to spare)
Transplant: Apr 21 🍅 Harvest: Jun 23 – Jul 28
Safe Start (90%) ✓ Fits season (81 days to spare)
Transplant: May 3 🍅 Harvest: Jul 5 – Aug 9

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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 91 gal / 100 sq ft
Carrots needs ~910 GDD — county provides 2,301 GDD Excellent fit

Carrots Planting Timeline โ€” Holt County, MO

Carrots Planting Calendar

Activity When Date Range
Direct Sow April 7 Apr 7 โ€“ Apr 28
Fall Sowing August 6 Aug 6 โ€“ Aug 20
Harvest June 9 Jun 9 โ€“ Jul 14

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May โ€”
June Harvest
July 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

60โ€“80 days

Soil pH

6 โ€“ 6.8

USDA Zone

Zone 5b

Growing Season

177 days

Growing Tips for Holt County

Sow seeds directly in loose, stone-free soil for straight roots. Keep soil moist until germination which can take 2-3 weeks. Thin seedlings to 2 inches apart.

Companion Planting

Good Companions

Avoid Planting Near

  • Dill
  • Parsnip

Level Up Your Garden

๐ŸŒพ Save Your Own Carrots Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Replant roots for 2nd year flowers. Harvest umbels when brown.
Storage Store airtight; viable 3 years at 35ยฐF, under 50% humidity.

Isolate 1/2 mile from Queen Anne's Lace (wild carrot). Biennial โ€” requires two seasons.

Frequently Asked Questions

When should I plant Carrots in Holt County, MO?

Holt County is in Zone 5b with an average last frost of April 21. Plan your Carrots planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Holt County, MO?

Holt County, Missouri is in USDA Hardiness Zone 5b. The average last spring frost is April 21 and first fall frost is October 15.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Holt County gardeners in Zone 5b organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

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