Blog

When to plant Kabocha in Grady County County,

For Kabocha in Grady County County, the safe spring window opens around March 5 and closes around March 26. Last expected frost is March 5, first fall frost November 21, giving a 261-day growing season.

When to Plant Kabocha in Grady County, GA

Grady County, Georgia Zone 9a June

June in Grady County, Georgia — your action list

We've pulled the most time-sensitive tasks for Grady County, Georgia this June and put them front and centre. Tackle them in order.

Avg. last frost March 5
Avg. first frost November 21
Soil temp (4") 82°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Pick kabocha

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

Coming up in July — start thinking about
  • First harvests: kabocha

Instant PDF download. No spam, unsubscribe any time.

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.

Grady County, Georgia is in USDA Zone 9a. The average last spring frost is March 5 and the first fall frost is November 21, giving you a growing season of approximately 261 days.

At an elevation of 323 feet, Grady County receives approximately 48.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Kabocha during the growing season. Clay soil retains moisture well for Kabocha, but amend with compost to improve drainage and prevent root rot.

Grady County, GA (Zone 9a) Long season
261 days
Last Spring Frost March 5
261 growing days
First Fall Frost November 21

Grady County Soil Profile

Soil Type

Clay Loam

Soil pH

5.4-6.5

Drainage

Well Drained

Kabocha Planting Risk Windows

Early Start (70% safe) ✓ Fits season (140 days to spare)
Start indoors: Jan 24 Transplant: Feb 28 🍅 Harvest: May 30 – Jun 27
Recommended (50%) ✓ Fits season (135 days to spare)
Start indoors: Feb 5 Transplant: Mar 12 🍅 Harvest: Jun 11 – Jul 9
Safe Start (90%) ✓ Fits season (138 days to spare)
Start indoors: Feb 26 Transplant: Apr 2 🍅 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 Grady County

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

Soil pH

Your soil pH (5.4–6.5) is more acidic than Kabocha prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Kabocha.

Organic Matter

Organic matter is moderate (2.2%). 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
0.8″/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 3.7" 0" ❄️ Dormant
Feb 4.1" 0" ❄️ Dormant
Mar 4.3" 4.9" 0" ✅ Rainfall sufficient
Apr 4.3" 4" 0.3" 💧 Light watering
May 4.3" 3.7" 0.6" 💧 Light watering
Jun 4.3" 4" 0.3" 💧 Light watering
Jul 4.3" 5.3" 0" ✅ Rainfall sufficient
Aug 4.3" 4.5" 0" ✅ Rainfall sufficient
Sep 4.3" 3.6" 0.7" 💧 Light watering
Oct 4.3" 2.8" 1.5" 💧 Light watering
Nov 4.3" 3.7" 0.6" 💧 Light watering
Dec 3.9" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Grady 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 ~1,688 GDD — county provides 4,763 GDD Excellent fit

Kabocha Planting Timeline — Grady County, GA

Kabocha Planting Calendar

Activity When Date Range
Start Indoors February 5 Feb 5 – Feb 19
Transplant Outdoors March 12 Mar 12 – Mar 26
Direct Sow March 5 Mar 5 – Mar 26
Harvest June 11 Jun 11 – Jul 9

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 9a

📆 Growing Season

261 days in Grady County

Growing Tips for Kabocha in Grady County

Direct sow Kabocha outdoors after March 05 in Grady County when soil has warmed and frost danger has passed.

With Grady County's clay soil (33% clay), work in 3-4 inches of compost before planting Kabocha. Avoid tilling when soil is wet to prevent compaction.

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 Grady County, GA?

Grady County is in Zone 9a with an average last frost of March 5. Plan your Kabocha planting based on this frost date — see the calendar above for exact timing.

What planting zone is Grady County, GA?

Grady County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is March 5 and first fall frost is November 21.

When should I plant Kabocha in Grady County, ?

In Grady County, , plant Kabocha after the last frost (around March 5) and before the first frost (around November 21). Best results when soil holds above 50°F.

What growing zone is Grady County, for Kabocha?

Grady County sits in USDA Zone 9a. Kabocha grows reliably in zones 3a through 11b, so it's a good fit here.

Can Kabocha grow in Grady County's climate?

Yes — Kabocha grows well in Grady County's temperate climate. Grady County averages a 261-day frost-free season, with last frost around March 5 and first frost around November 21.

🌱

Your Grady County Garden Planner — Free

A 22-page printable planner built for Grady County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Grady County, GA. 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.