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When to Plant Zucchini in Madison County, NE

Zucchini
Madison County, Nebraska Zone 5b August

August in the garden — Madison County, Nebraska

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

Avg. last frost April 30
Avg. first frost October 7
Soil temp (4") 79°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. It's harvest week for zucchini

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

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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.

Madison County, Nebraska is in USDA Zone 5b. The average last spring frost is April 30 and the first fall frost is October 7, giving you a growing season of approximately 160 days.

At an elevation of 858 feet, Madison County receives approximately 33.9 inches of rainfall annually with predominantly loam soil. Summer highs average 87°F, providing good warmth for Zucchini during the growing season.

Madison County, NE (Zone 5b) Moderate season
160 days
Last Spring Frost April 30
160 growing days
First Fall Frost October 7

Madison County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.2

Drainage

Well Drained

Zucchini Planting Risk Windows

Early Start (70% safe) ✓ Fits season (42 days to spare)
Start indoors: Mar 20 Transplant: May 8 🍅 Harvest: Jun 26 – Aug 21
Recommended (50%) ✓ Fits season (41 days to spare)
Start indoors: Mar 26 Transplant: May 14 🍅 Harvest: Jul 2 – Aug 27
Safe Start (90%) ✓ Fits season (34 days to spare)
Start indoors: Apr 10 Transplant: May 29 🍅 Harvest: Jul 17 – Sep 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.

Soil Compatibility in Madison County

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

Soil pH

Your soil pH (6.4–7.2) is within Zucchini's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is excellent (4.3%) — Zucchini will thrive.

How to Plant Zucchini

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

Succession Planting Zucchini

4
successive plantings in your 160-day season

Sow every 5.1 weeks. Last sowing by Aug 08 to harvest before frost.

Zucchini Water Budget

Plant needs
1.2″/week
Rainfall provides
0.9″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 530 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 0.8" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 5.2" 4" 1.2" 💧 Light watering
May 5.2" 5.4" 0" ✅ Rainfall sufficient
Jun 5.2" 5.8" 0" ✅ Rainfall sufficient
Jul 5.2" 4.1" 1.1" 💧 Light watering
Aug 5.2" 4.2" 1" 💧 Light watering
Sep 5.2" 2.8" 2.4" 💧 Light watering
Oct 5.2" 2" 3.2" 🚿 Regular watering
Nov 1" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Madison 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 ~801 GDD — county provides 2,440 GDD Excellent fit

Zucchini Planting Timeline — Madison County, NE

Zucchini Planting Calendar

Activity When Date Range
Start Indoors March 26 Mar 26 – Apr 9
Transplant Outdoors May 14 May 14 – May 28
Direct Sow May 7 May 7 – May 28
Harvest July 2 Jul 2 – Aug 27

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

Month-by-Month Timeline

MonthActivities
January
February
March Start Indoors
April Start Indoors
May Transplant Outdoors Direct Sow
June
July Harvest
August Harvest
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: ideal

🗺️ USDA Zone

Zone 5b

📆 Growing Season

160 days in Madison County

Growing Tips for Zucchini in Madison County

Direct sow Zucchini outdoors after April 30 in Madison County when soil has warmed and frost danger has passed.

Your generous 160.0-day season in Madison 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 Madison County, NE?

Madison County is in Zone 5b with an average last frost of April 30. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Madison County, NE?

Madison County, Nebraska is in USDA Hardiness Zone 5b. The average last spring frost is April 30 and first fall frost is October 7.

🌱

Your Madison County Garden Planner — Free

A 22-page printable planner built for Madison County (Zone 5b). 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 Madison County, NE. Local conditions may vary. Last updated: August 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.