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When to Plant Daikon in Harrison County, MO

Daikon is a large, mild Japanese radish that can grow over a foot long. It is excellent for pickling, stir-fries, and as a soil-breaking cover crop.

Harrison County, Missouri is in USDA Zone 5b. The average last spring frost is April 19 and the first fall frost is October 15, giving you a growing season of approximately 179 days.

At an elevation of 1,349 feet, Harrison County receives approximately 37.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Daikon to ensure they mature before fall.

Harrison County, MO (Zone 5b) Moderate season
179 days
Last Spring Frost April 19
179 growing days
First Fall Frost October 15

Harrison County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (95 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 8 – Jul 6
Recommended (50%) ✓ Fits season (95 days to spare)
Transplant: Apr 19 🍅 Harvest: Jun 14 – Jul 12
Safe Start (90%) ✓ Fits season (97 days to spare)
Transplant: May 3 🍅 Harvest: Jun 28 – Jul 26

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 184 gal / 100 sq ft
Daikon needs ~780 GDD — county provides 2,327 GDD Excellent fit

Daikon Planting Timeline โ€” Harrison County, MO

Daikon Planting Calendar

Activity When Date Range
Direct Sow April 5 Apr 5 โ€“ Apr 26
Fall Sowing August 6 Aug 6 โ€“ Aug 20
Harvest May 31 May 31 โ€“ Jun 28

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 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

5.8 โ€“ 7

USDA Zone

Zone 5b

Growing Season

179 days

Growing Tips for Harrison County

Direct sow in late summer for fall harvest. Loosen soil deeply before planting. Thin seedlings to 6 inches apart. Harvest before hard freeze as exposed shoulders may crack.

Companion Planting

Good Companions

Avoid Planting Near

  • Hyssop

Level Up Your Garden

Frequently Asked Questions

When should I plant Daikon in Harrison County, MO?

Harrison County is in Zone 5b with an average last frost of April 19. Plan your Daikon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Harrison County, MO?

Harrison County, Missouri is in USDA Hardiness Zone 5b. The average last spring frost is April 19 and first fall frost is October 15.

๐ŸŒฑ

Plan Your Garden with Confidence

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