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When to Plant Zucchini in Itawamba County, MS

Itawamba County, Mississippi Zone 8a May

Top priorities for Itawamba County, Mississippi gardeners in May

Your Itawamba County, Mississippi garden is entering a new phase. Here's what's on the schedule for May and why each task matters now.

Avg. last frost March 26
Avg. first frost November 2
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
  1. Harvest zucchini as they ripen

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

Get ahead of 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.

Itawamba County, Mississippi is in USDA Zone 8a. The average last spring frost is March 26 and the first fall frost is November 2, giving you a growing season of approximately 221 days.

At an elevation of 385 feet, Itawamba County receives approximately 51.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°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. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Zucchini root diseases.

Itawamba County, MS (Zone 8a) Long season
221 days
Last Spring Frost March 26
221 growing days
First Fall Frost November 2
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Itawamba County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (104 days to spare)
Start indoors: Feb 18 Transplant: Apr 1 🍅 Harvest: May 20 – Jul 15
Recommended (50%) ✓ Fits season (102 days to spare)
Start indoors: Feb 26 Transplant: Apr 9 🍅 Harvest: May 28 – Jul 23
Safe Start (90%) ✓ Fits season (107 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 Itawamba County

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

Soil pH

Your soil pH (5.3–6.8) overlaps with Zucchini's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.3%). Annual compost additions will help Zucchini.

How to Plant Zucchini

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

Succession Planting Zucchini

5
successive plantings in your 221-day season

Sow every 5.1 weeks. Last sowing by Sep 03 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
1.0″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 446 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 3.8" 0" ❄️ Dormant
Feb 3.6" 0" ❄️ Dormant
Mar 5.2" 5.2" 0" ✅ Rainfall sufficient
Apr 5.2" 3.8" 1.4" 💧 Light watering
May 5.2" 3.8" 1.4" 💧 Light watering
Jun 5.2" 4.9" 0.3" 💧 Light watering
Jul 5.2" 5.9" 0" ✅ Rainfall sufficient
Aug 5.2" 5" 0.2" 💧 Light watering
Sep 5.2" 3.6" 1.6" 💧 Light watering
Oct 5.2" 3.2" 2" 💧 Light watering
Nov 5.2" 4.3" 0.9" 💧 Light watering
Dec 4.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Itawamba 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 ~1,076 GDD — county provides 4,530 GDD Excellent fit

Zucchini Planting Timeline — Itawamba County, MS

Zucchini Planting Calendar

Activity When Date Range
Start Indoors February 26 Feb 26 – Mar 12
Transplant Outdoors April 9 Apr 9 – Apr 23
Direct Sow April 2 Apr 2 – Apr 23
Harvest May 28 May 28 – Jul 23

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · Only during dry spells

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

221 days in Itawamba County

Growing Tips for Zucchini in Itawamba County

Direct sow Zucchini outdoors after March 26 in Itawamba County when soil has warmed and frost danger has passed.

With Itawamba County's clay soil (27% clay), work in 3-4 inches of compost before planting Zucchini. Avoid tilling when soil is wet to prevent compaction.

Your generous 221.0-day season in Itawamba 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 Itawamba County, MS?

Itawamba County is in Zone 8a with an average last frost of March 26. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Itawamba County, MS?

Itawamba County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 26 and first fall frost is November 2.

🌱

Your Itawamba County Garden Planner — Free

A 24-page printable planner built for Itawamba 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 Itawamba County, MS. 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.