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When to plant Kabocha in Lee County, KY

Spring Kabocha in Lee County goes in April 25–May 16, once nighttime temps stop dipping near freezing.

When to Plant Kabocha in Lee County, KY

Lee County, Kentucky Zone 6b June

June to-do list for Lee County, Kentucky

If you only do a handful of things in the garden this June, make it these. They're sequenced around your zone's frost timing.

Avg. last frost April 18
Avg. first frost October 21
Soil temp (4") 66°F
Watering Low
Pest pressure High
Daylight 14.6 hrs

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Kabocha is a Japanese winter squash with an exceptionally sweet, dense, chestnut-like flesh and dark green skin. It is a favorite in Asian cuisine for its rich, dry texture.

Lee County, Kentucky is in USDA Zone 6b. The average last spring frost is April 18 and the first fall frost is October 21, giving you a growing season of approximately 186 days.

At an elevation of 3,433 feet, Lee County receives approximately 52.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Kabocha during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kabocha root diseases.

Lee County, KY (Zone 6b) Moderate season
186 days
Last Spring Frost April 18
186 growing days
First Fall Frost October 21

Lee County Soil Profile

Soil Type

Silt Loam

Soil pH

5.3-6.8

Drainage

Well Drained

Kabocha Planting Risk Windows

Early Start (70% safe) ✓ Fits season (57 days to spare)
Start indoors: Mar 6 Transplant: Apr 24 🍅 Harvest: Jul 24 – Aug 21
Recommended (50%) ✓ Fits season (53 days to spare)
Start indoors: Mar 14 Transplant: May 2 🍅 Harvest: Aug 1 – Aug 29
Safe Start (90%) ✓ Fits season (46 days to spare)
Start indoors: Apr 1 Transplant: May 20 🍅 Harvest: Aug 19 – Sep 16

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 Lee County

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

Soil pH

Your soil pH (5.3–6.8) overlaps with Kabocha's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.0%). Annual compost additions will help Kabocha.

How to Plant Kabocha

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Kabocha Water Budget

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

Monthly Watering Guide for Kabocha

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

Month Kabocha Needs Rainfall You Supplement Action
Jan 4.1" 0" ❄️ Dormant
Feb 4.9" 0" ❄️ Dormant
Mar 4.5" 0" ❄️ Dormant
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 5" 0" ✅ Rainfall sufficient
Jul 4.3" 5" 0" ✅ Rainfall sufficient
Aug 4.3" 5.7" 0" ✅ Rainfall sufficient
Sep 4.3" 3.6" 0.7" 💧 Light watering
Oct 4.3" 3.1" 1.2" 💧 Light watering
Nov 4.1" 0" ❄️ Dormant
Dec 4.1" 0" ❄️ Dormant

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

Kabocha 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.

Kabocha needs ~1,272 GDD — county provides 2,557 GDD Excellent fit

Kabocha Planting Timeline — Lee County, KY

Kabocha Planting Calendar

Activity When Date Range
Start Indoors March 14 Mar 14 – Mar 28
Transplant Outdoors May 2 May 2 – May 16
Direct Sow April 25 Apr 25 – May 16
Harvest August 1 Aug 1 – Aug 29

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

85–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 6b

📆 Growing Season

186 days in Lee County

Growing Tips for Kabocha in Lee County

Direct sow Kabocha outdoors after April 18 in Lee County when soil has warmed and frost danger has passed.

Common pests for Kabocha in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after frost or start indoors. Harvest when the skin is hard and dull. The stem should be dry and corky. Stores well for 3-4 months in a cool, dry place.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Kabocha in Lee County, KY?

Lee County is in Zone 6b with an average last frost of April 18. Plan your Kabocha planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lee County, KY?

Lee County, Kentucky is in USDA Hardiness Zone 6b. The average last spring frost is April 18 and first fall frost is October 21.

When should I plant Kabocha in Lee County, KY?

In Lee County, KY, plant Kabocha after the last frost (around April 18) and before the first frost (around October 21). Best results when soil holds above 50°F.

What growing zone is Lee County, KY for Kabocha?

Lee County sits in USDA Zone 6b. Kabocha grows reliably in zones 3a through 11b, so it's a good fit here.

Can Kabocha grow in Lee County's climate?

Yes — Kabocha grows well in Lee County's temperate climate. Lee County averages a 186-day frost-free season, with last frost around April 18 and first frost around October 21.

🌱

Your Lee County Garden Planner — Free

A 22-page printable planner built for Lee 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 Lee County, KY. Local conditions may vary. Last updated: June 2026.

Sources & credits

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