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When to Plant Delicata Squash in Gwinnett County, GA

Gwinnett County, Georgia Zone 8a May

This month in Gwinnett County, Georgia

Your garden in Gwinnett County, Georgia is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost March 22
Avg. first frost November 13
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
To set up a strong June, finish these tasks
  • First harvests: delicata squash

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Delicata squash is a winter squash with an edible skin and sweet, creamy orange flesh. Its compact vines make it suitable for smaller gardens.

Gwinnett County, Georgia is in USDA Zone 8a. The average last spring frost is March 22 and the first fall frost is November 13, giving you a growing season of approximately 236 days.

At an elevation of 127 feet, Gwinnett County receives approximately 55.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 88°F, providing good warmth for Delicata Squash during the growing season. Clay soil retains moisture well for Delicata Squash, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Delicata Squash root diseases.

Gwinnett County, GA (Zone 8a) Long season
236 days
Last Spring Frost March 22
236 growing days
First Fall Frost November 13
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Gwinnett County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (104 days to spare)
Start indoors: Feb 11 Transplant: Mar 25 🍅 Harvest: Jun 17 – Jul 22
Recommended (50%) ✓ Fits season (103 days to spare)
Start indoors: Feb 22 Transplant: Apr 5 🍅 Harvest: Jun 28 – Aug 2
Safe Start (90%) ✓ Fits season (102 days to spare)
Start indoors: Mar 12 Transplant: Apr 23 🍅 Harvest: Jul 16 – Aug 20

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 Gwinnett County

How your county's soil matches Delicata Squash's growing requirements.

Soil pH

Your soil pH (5.6–6.6) overlaps with Delicata Squash's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Delicata Squash.

How to Plant Delicata Squash

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

Succession Planting Delicata Squash

3
successive plantings in your 236-day season

Sow every 9.1 weeks. Last sowing by Aug 05 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 11 gal / 100 sq ft

Monthly Watering Guide for Delicata Squash

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

Month Delicata Squash Needs Rainfall You Supplement Action
Jan 4.7" 0" ❄️ Dormant
Feb 4.6" 0" ❄️ Dormant
Mar 4.3" 5.7" 0" ✅ Rainfall sufficient
Apr 4.3" 4.2" 0.1" 💧 Light watering
May 4.3" 4.2" 0.1" 💧 Light watering
Jun 4.3" 4.7" 0" ✅ Rainfall sufficient
Jul 4.3" 6" 0" ✅ Rainfall sufficient
Aug 4.3" 5.8" 0" ✅ Rainfall sufficient
Sep 4.3" 3.7" 0.6" 💧 Light watering
Oct 4.3" 3.8" 0.5" 💧 Light watering
Nov 4.3" 4.5" 0" ✅ Rainfall sufficient
Dec 3.9" 0" ❄️ Dormant

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

Delicata Squash 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.

Delicata Squash needs ~1,440 GDD — county provides 3,776 GDD Excellent fit

Delicata Squash Planting Timeline — Gwinnett County, GA

Delicata Squash Planting Calendar

Activity When Date Range
Start Indoors February 22 Feb 22 – Mar 8
Transplant Outdoors April 5 Apr 5 – Apr 19
Direct Sow March 29 Mar 29 – Apr 19
Harvest June 28 Jun 28 – Aug 2

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

80–100 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

236 days in Gwinnett County

Growing Tips for Delicata Squash in Gwinnett County

Direct sow Delicata Squash outdoors after March 22 in Gwinnett County when soil has warmed and frost danger has passed.

With Gwinnett County's clay soil (32% clay), work in 3-4 inches of compost before planting Delicata Squash. Avoid tilling when soil is wet to prevent compaction.

Common pests for Delicata Squash 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 last frost on mounds. Harvest when skin is hard and ivory with green stripes. The thin skin does not need peeling. Stores 2-3 months in a cool 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 Delicata Squash in Gwinnett County, GA?

Gwinnett County is in Zone 8a with an average last frost of March 22. Plan your Delicata Squash planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gwinnett County, GA?

Gwinnett County, Georgia is in USDA Hardiness Zone 8a. The average last spring frost is March 22 and first fall frost is November 13.

🌱

Your Gwinnett County Garden Planner — Free

A 24-page printable planner built for Gwinnett County (Zone 8a). 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 Gwinnett 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.