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When to Plant Daikon in Ohio County, IN

Ohio County, Indiana Zone 6b May

Your May game plan for Ohio County, Indiana

May is a pivotal month for Ohio County, Indiana gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost April 17
Avg. first frost October 19
Soil temp (4") 62°F
Watering Moderate
Pest pressure Low
Daylight 14.1 hrs
  1. Harvest daikon as they ripen

    If you can't use it all right away, check the food-preservation section of your planner.

June prep starts now
  • First harvests: daikon

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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.

Ohio County, Indiana is in USDA Zone 6b. The average last spring frost is April 17 and the first fall frost is October 19, giving you a growing season of approximately 185 days.

At an elevation of 882 feet, Ohio County receives approximately 33.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Daikon during the growing season.

Ohio County, IN (Zone 6b) Moderate season
185 days
Last Spring Frost April 17
185 growing days
First Fall Frost October 19

Ohio County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (103 days to spare)
Transplant: Apr 10 🍅 Harvest: Jun 5 – Jul 3
Recommended (50%) ✓ Fits season (101 days to spare)
Transplant: Apr 17 🍅 Harvest: Jun 12 – Jul 10
Safe Start (90%) ✓ Fits season (94 days to spare)
Transplant: May 7 🍅 Harvest: Jul 2 – Jul 30

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.

Soil Compatibility in Ohio County

How your county's soil matches Daikon's growing requirements.

Soil pH

Your soil pH (5.7–7.1) overlaps with Daikon's range (5.8–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Ohio County is excellent for Daikon — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Daikon.

Organic Matter

Organic matter is excellent (4.6%) — Daikon will thrive.

How to Plant Daikon

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Daikon

4
successive plantings in your 185-day season

Sow every 5.7 weeks. Last sowing by Aug 10 to harvest before frost.

For a dedicated fall crop, sow by Aug 10.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 888 gal / 100 sq ft

Monthly Watering Guide for Daikon

Daikon needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Daikon Needs Rainfall You Supplement Action
Jan 1.2" 0" ❄️ Dormant
Feb 1.6" 0" ❄️ Dormant
Mar 2.3" 0" ❄️ Dormant
Apr 4.3" 2.9" 1.4" 💧 Light watering
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 4.9" 0" ✅ Rainfall sufficient
Jul 4.3" 3.9" 0.4" 💧 Light watering
Aug 4.3" 3.5" 0.8" 💧 Light watering
Sep 4.3" 2.6" 1.7" 💧 Light watering
Oct 4.3" 2.5" 1.8" 💧 Light watering
Nov 2.6" 0" ❄️ Dormant
Dec 1.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Ohio County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Daikon Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Daikon needs ~1,005 GDD — county provides 3,098 GDD Excellent fit

Daikon Planting Timeline — Ohio County, IN

Daikon Planting Calendar

Activity When Date Range
Direct Sow April 3 Apr 3 – Apr 24
Harvest May 29 May 29 – Jun 26
Fall Sowing August 10 Aug 10 – Aug 24

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 5.8–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

185 days in Ohio County

Growing Tips for Daikon in Ohio County

Direct sow Daikon outdoors after April 17 in Ohio County when soil has warmed and frost danger has passed.

Common pests for Daikon in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Daikon in Ohio County, IN?

Ohio County is in Zone 6b with an average last frost of April 17. Plan your Daikon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Ohio County, IN?

Ohio County, Indiana is in USDA Hardiness Zone 6b. The average last spring frost is April 17 and first fall frost is October 19.

🌱

Your Ohio County Garden Planner — Free

A 24-page printable planner built for Ohio 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 Ohio County, IN. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.