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When to Plant Butternut Squash in Chatham County, GA

Butternut squash is a popular winter squash with a long neck, small seed cavity, and sweet, nutty orange flesh. It stores exceptionally well for months.

Chatham County, Georgia is in USDA Zone 8b. The average last spring frost is March 5 and the first fall frost is November 23, giving you a growing season of approximately 263 days.

At an elevation of 398 feet, Chatham County receives approximately 51.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91ยฐF, providing good warmth for Butternut Squash during the growing season. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Butternut Squash will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Butternut Squash root diseases.

Chatham County, GA (Zone 8b) Long season
263 days
Last Spring Frost March 5
263 growing days
First Fall Frost November 23

Chatham County Soil Profile

Soil Type

Sandy Loam

Soil pH

5-6.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (129 days to spare)
Start indoors: Jan 23 Transplant: Mar 6 🍅 Harvest: Jun 5 – Jul 10
Recommended (50%) ✓ Fits season (123 days to spare)
Start indoors: Feb 5 Transplant: Mar 19 🍅 Harvest: Jun 18 – Jul 23
Safe Start (90%) ✓ Fits season (125 days to spare)
Start indoors: Feb 24 Transplant: Apr 7 🍅 Harvest: Jul 7 – Aug 11

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Butternut Squash needs ~1,779 GDD — county provides 4,799 GDD Excellent fit

Butternut Squash Planting Timeline โ€” Chatham County, GA

Butternut Squash Planting Calendar

Activity When Date Range
Start Indoors February 5 Feb 5 โ€“ Feb 19
Transplant Outdoors March 19 Mar 19 โ€“ Apr 2
Direct Sow March 12 Mar 12 โ€“ Apr 2
Harvest June 18 Jun 18 โ€“ Jul 23

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

85โ€“110 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 8b

Growing Season

263 days

Growing Tips for Chatham County

Start seeds indoors 3 weeks early or direct sow after frost. Allow 6-8 feet for sprawling vines. Harvest when the skin is hard and uniformly tan. Cure in the sun for 10 days.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Butternut Squash in Chatham County, GA?

Chatham County is in Zone 8b with an average last frost of March 5. Plan your Butternut Squash planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Chatham County, GA?

Chatham County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 5 and first fall frost is November 23.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Chatham County gardeners in Zone 8b organize planting dates, track what's growing, and never miss a planting window.

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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 Chatham County, GA. Local conditions may vary. Last updated: April 2026.