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When to Plant Kabocha in Bulloch County, GA

Bulloch County, Georgia Zone 8b May

Top priorities for Bulloch County, Georgia gardeners in May

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

Avg. last frost March 6
Avg. first frost November 23
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
June prep starts now
  • First harvests: kabocha

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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.

Bulloch County, Georgia is in USDA Zone 8b. The average last spring frost is March 6 and the first fall frost is November 23, giving you a growing season of approximately 262 days.

At an elevation of 333 feet, Bulloch County receives approximately 56.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 94°F, providing good warmth for Kabocha during the growing season. Sandy soil warms quickly in spring — great for early planting — but Kabocha will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kabocha root diseases.

Bulloch County, GA (Zone 8b) Long season
262 days
Last Spring Frost March 6
262 growing days
First Fall Frost November 23
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Bulloch County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.1-6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (133 days to spare)
Start indoors: Jan 26 Transplant: Mar 9 🍅 Harvest: Jun 8 – Jul 6
Recommended (50%) ✓ Fits season (129 days to spare)
Start indoors: Feb 6 Transplant: Mar 20 🍅 Harvest: Jun 19 – Jul 17
Safe Start (90%) ✓ Fits season (131 days to spare)
Start indoors: Feb 26 Transplant: Apr 9 🍅 Harvest: Jul 9 – Aug 6

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 Bulloch County

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

Soil pH

Your soil pH (5.1–6.0) is more acidic than Kabocha prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Bulloch County warms quickly in spring but drains fast. Kabocha will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Kabocha.

Organic Matter

Organic matter is low (1.7%). Add 2-3 inches of compost before planting Kabocha.

How to Plant Kabocha

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/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 5.1" 0" ❄️ Dormant
Feb 4.4" 0" ❄️ Dormant
Mar 4.3" 5" 0" ✅ Rainfall sufficient
Apr 4.3" 4.3" 0" ✅ Rainfall sufficient
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 6" 0" ✅ Rainfall sufficient
Jul 4.3" 6.9" 0" ✅ Rainfall sufficient
Aug 4.3" 5" 0" ✅ Rainfall sufficient
Sep 4.3" 3.9" 0.4" 💧 Light watering
Oct 4.3" 3.3" 1" 💧 Light watering
Nov 4.3" 4.1" 0.2" 💧 Light watering
Dec 4.3" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Bulloch 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 ~1,896 GDD — county provides 5,371 GDD Excellent fit

Kabocha Planting Timeline — Bulloch County, GA

Kabocha Planting Calendar

Activity When Date Range
Start Indoors February 6 Feb 6 – Feb 20
Transplant Outdoors March 20 Mar 20 – Apr 3
Direct Sow March 13 Mar 13 – Apr 3
Harvest June 19 Jun 19 – Jul 17

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 8b

📆 Growing Season

262 days in Bulloch County

Growing Tips for Kabocha in Bulloch County

Direct sow Kabocha outdoors after March 06 in Bulloch County when soil has warmed and frost danger has passed.

Sandy soil in Bulloch County dries quickly — mulch Kabocha with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Bulloch County, GA?

Bulloch County is in Zone 8b with an average last frost of March 6. Plan your Kabocha planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bulloch County, GA?

Bulloch County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 6 and first fall frost is November 23.

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Your Bulloch County Garden Planner — Free

A 24-page printable planner built for Bulloch County (Zone 8b). 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 Bulloch County, GA. 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.