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When to Plant Zucchini in Kemper County, MS

Kemper County, Mississippi Zone 8b May

May to-do list for Kemper County, Mississippi

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

Avg. last frost March 23
Avg. first frost November 6
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Start harvesting zucchini

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

Before June arrives, get these ready
  • 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.

Kemper County, Mississippi is in USDA Zone 8b. 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 292 feet, Kemper County receives approximately 56.1 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90°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.

Kemper County, MS (Zone 8b) Long season
228 days
Last Spring Frost March 23
228 growing days
First Fall Frost November 6

Kemper County Soil Profile

Soil Type

Clay Loam

Soil pH

5.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (112 days to spare)
Start indoors: Feb 14 Transplant: Mar 28 🍅 Harvest: May 16 – Jul 11
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 (103 days to spare)
Start indoors: Mar 18 Transplant: Apr 29 🍅 Harvest: Jun 17 – Aug 12

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 Kemper County

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

Soil pH

Your soil pH (5.8–6.5) overlaps with Zucchini's range (6.0–7.5), though not a perfect match.

Soil Texture

The clay loam soil in Kemper 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
1.0″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 338 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 5.3" 0" ❄️ Dormant
Feb 5" 0" ❄️ Dormant
Mar 5.2" 5.4" 0" ✅ Rainfall sufficient
Apr 5.2" 4.3" 0.9" 💧 Light watering
May 5.2" 4.3" 0.9" 💧 Light watering
Jun 5.2" 4.8" 0.4" 💧 Light watering
Jul 5.2" 4.9" 0.3" 💧 Light watering
Aug 5.2" 5.4" 0" ✅ Rainfall sufficient
Sep 5.2" 4" 1.2" 💧 Light watering
Oct 5.2" 3.8" 1.4" 💧 Light watering
Nov 5.2" 4.5" 0.7" 💧 Light watering
Dec 4.4" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Kemper 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 ~919 GDD — county provides 3,990 GDD Excellent fit

Zucchini Planting Timeline — Kemper County, MS

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 · Only during dry spells

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

228 days in Kemper County

Growing Tips for Zucchini in Kemper County

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

With Kemper County's clay soil (34% 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 Kemper 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 Kemper County, MS?

Kemper County is in Zone 8b 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 Kemper County, MS?

Kemper County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 23 and first fall frost is November 6.

🌱

Your Kemper County Garden Planner — Free

A 24-page printable planner built for Kemper County (Zone 8b). 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 Kemper 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.