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When to Plant Kohlrabi in Breckinridge County, KY

Breckinridge County, Kentucky Zone 7a May

Your May planting checklist for Breckinridge County, Kentucky

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

Avg. last frost April 4
Avg. first frost November 3
Soil temp (4") 53°F
Watering Moderate
Pest pressure Low
Daylight 14 hrs
  1. Indoor seed-starting week for kohlrabi

    Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.

  2. Start harvesting kohlrabi

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

Looking ahead to June
  • First harvests: kohlrabi

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Kohlrabi is an unusual brassica that forms a swollen stem above ground with a mild, sweet turnip-like flavor. Both the bulb and tender leaves are edible.

Breckinridge County, Kentucky is in USDA Zone 7a. The average last spring frost is April 4 and the first fall frost is November 3, giving you a growing season of approximately 213 days.

At an elevation of 3,500 feet, Breckinridge County receives approximately 50.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Kohlrabi during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kohlrabi root diseases.

Breckinridge County, KY (Zone 7a) Long season
213 days
Last Spring Frost April 4
213 growing days
First Fall Frost November 3
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Breckinridge County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (132 days to spare)
Start indoors: Feb 21 Transplant: Mar 28 🍅 Harvest: May 16 – Jun 20
Recommended (50%) ✓ Fits season (129 days to spare)
Start indoors: Feb 28 Transplant: Apr 4 🍅 Harvest: May 23 – Jun 27
Safe Start (90%) ✓ Fits season (140 days to spare)
Start indoors: Mar 13 Transplant: Apr 17 🍅 Harvest: Jun 5 – Jul 10

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 Breckinridge County

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

Soil pH

Your soil pH (5.7–7.0) overlaps with Kohlrabi's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.2%). Annual compost additions will help Kohlrabi.

How to Plant Kohlrabi

0.5"
Planting Depth
4"
Between Plants
12"
Between Rows

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

Succession Planting Kohlrabi

5
successive plantings in your 213-day season

Sow every 5.1 weeks. Last sowing by Aug 30 to harvest before frost.

For a dedicated fall crop, sow by Aug 25.

Plant Water Budget

Plant needs
0.7″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Kohlrabi

Kohlrabi needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.

Month Kohlrabi Needs Rainfall You Supplement Action
Jan 4.9" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 4.8" 0" ❄️ Dormant
Apr 3" 3.8" 0" ✅ Rainfall sufficient
May 3" 3.6" 0" ✅ Rainfall sufficient
Jun 3" 4.2" 0" ✅ Rainfall sufficient
Jul 3" 4.8" 0" ✅ Rainfall sufficient
Aug 3" 4.5" 0" ✅ Rainfall sufficient
Sep 3" 4.3" 0" ✅ Rainfall sufficient
Oct 3" 3.2" 0" ✅ Rainfall sufficient
Nov 3" 3.6" 0" ✅ Rainfall sufficient
Dec 4.8" 0" ❄️ Dormant

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

Kohlrabi 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.

Kohlrabi needs ~962 GDD — county provides 3,727 GDD Excellent fit

Kohlrabi Planting Timeline — Breckinridge County, KY

Kohlrabi Planting Calendar

Activity When Date Range
Start Indoors February 28 Feb 28 – Mar 14
Transplant Outdoors April 4 Apr 4 – Apr 18
Direct Sow March 21 Mar 21 – Apr 11
Harvest May 23 May 23 – Jun 27
Fall Sowing August 25 Aug 25 – Sep 8

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors Direct Sow
April Transplant Outdoors Direct Sow
May Harvest
June Harvest
July
August Fall Sowing
September Fall Sowing
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Natural rainfall sufficient

📅 Days to Maturity

45–65 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

213 days in Breckinridge County

Growing Tips for Kohlrabi in Breckinridge County

Direct sow Kohlrabi outdoors after April 04 in Breckinridge County when soil has warmed and frost danger has passed.

Your generous 213.0-day season in Breckinridge County allows multiple plantings of Kohlrabi. Sow every 22.0 days for continuous harvest.

Common pests for Kohlrabi 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 spring or fall. Harvest when bulbs are 2-3 inches in diameter for best texture and flavor. Larger bulbs may become woody and fibrous.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Kohlrabi in Breckinridge County, KY?

Breckinridge County is in Zone 7a with an average last frost of April 4. Plan your Kohlrabi planting based on this frost date — see the calendar above for exact timing.

What planting zone is Breckinridge County, KY?

Breckinridge County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 4 and first fall frost is November 3.

🌱

Your Breckinridge County Garden Planner — Free

A 24-page printable planner built for Breckinridge County (Zone 7a). 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 Breckinridge County, KY. 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.