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When to Plant Zucchini in Coweta County, GA

Coweta County, Georgia Zone 8a May

Coweta County, Georgia gardeners: here's your May plan

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

Avg. last frost March 23
Avg. first frost November 6
Soil temp (4") 67°F
Watering Moderate
Pest pressure Moderate
Daylight 13.7 hrs
  1. Start harvesting zucchini

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

A few tasks this May that'll pay off in June
  • First harvests: zucchini

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Zucchini is an incredibly prolific summer squash that can produce an abundance of fruit from just a few plants. It is versatile in the kitchen from grilling to baking.

Coweta County, Georgia is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 6, giving you a growing season of approximately 228 days.

At an elevation of 264 feet, Coweta County receives approximately 48.4 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Zucchini during the growing season. Clay soil retains moisture well for Zucchini, but amend with compost to improve drainage and prevent root rot.

Coweta County, GA (Zone 8a) Long season
228 days
Last Spring Frost March 23
228 growing days
First Fall Frost November 6

Coweta County Soil Profile

Soil Type

Clay Loam

Soil pH

5.8-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (112 days to spare)
Start indoors: Feb 15 Transplant: Mar 29 🍅 Harvest: May 17 – Jul 12
Recommended (50%) ✓ Fits season (109 days to spare)
Start indoors: Feb 23 Transplant: Apr 6 🍅 Harvest: May 25 – Jul 20
Safe Start (90%) ✓ Fits season (113 days to spare)
Start indoors: Mar 14 Transplant: Apr 25 🍅 Harvest: Jun 13 – Aug 8

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 Coweta County

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

Soil pH

Your soil pH (5.8–6.8) overlaps with Zucchini's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Zucchini.

How to Plant Zucchini

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

Succession Planting Zucchini

6
successive plantings in your 228-day season

Sow every 5.1 weeks. Last sowing by Sep 07 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.9″/week
You supply
0.3″/week
Watering frequency 1-2 times/week
Season total 626 gal / 100 sq ft

Monthly Watering Guide for Zucchini

Zucchini needs approximately 1.2 inches of water per week (5.2" per month). Here's how your county's rainfall compares month by month.

Month Zucchini Needs Rainfall You Supplement Action
Jan 4.6" 0" ❄️ Dormant
Feb 3.5" 0" ❄️ Dormant
Mar 5.2" 5" 0.2" 💧 Light watering
Apr 5.2" 3.5" 1.7" 💧 Light watering
May 5.2" 3.5" 1.7" 💧 Light watering
Jun 5.2" 4.7" 0.5" 💧 Light watering
Jul 5.2" 5.2" 0" ✅ Rainfall sufficient
Aug 5.2" 4.8" 0.4" 💧 Light watering
Sep 5.2" 3.6" 1.6" 💧 Light watering
Oct 5.2" 2.7" 2.5" 💧 Light watering
Nov 5.2" 3.7" 1.5" 💧 Light watering
Dec 3.6" 0" ❄️ Dormant

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

Zucchini 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.

Zucchini needs ~958 GDD — county provides 4,161 GDD Excellent fit

Zucchini Planting Timeline — Coweta County, GA

Zucchini Planting Calendar

Activity When Date Range
Start Indoors February 23 Feb 23 – Mar 9
Transplant Outdoors April 6 Apr 6 – Apr 20
Direct Sow March 30 Mar 30 – Apr 20
Harvest May 25 May 25 – Jul 20

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 Harvest
June Harvest
July Harvest
August
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · 1-2 times/week

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

228 days in Coweta County

Growing Tips for Zucchini in Coweta County

Direct sow Zucchini outdoors after March 23 in Coweta County when soil has warmed and frost danger has passed.

With Coweta County's clay soil (28% clay), work in 3-4 inches of compost before planting Zucchini. Avoid tilling when soil is wet to prevent compaction.

Your generous 228.0-day season in Coweta County allows multiple plantings of Zucchini. Sow every 22.0 days for continuous harvest.

Common pests for Zucchini 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. Harvest when fruits are 6-8 inches long for best flavor and texture. Check plants daily in summer as fruits can double in size overnight.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Zucchini in Coweta County, GA?

Coweta County is in Zone 8a with an average last frost of March 23. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Coweta County, GA?

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

🌱

Your Coweta County Garden Planner — Free

A 24-page printable planner built for Coweta 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 Coweta 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.