Blog

When to Plant Zucchini in McPherson County, NE

McPherson County, Nebraska Zone 5b May

Your May gardening checklist

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

Avg. last frost May 3
Avg. first frost October 9
Soil temp (4") 53°F
Watering High
Pest pressure Low
Daylight 14.3 hrs
  1. Time to transplant zucchini

    Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.

  2. Put zucchini seeds straight in the ground

    Succession planting is the secret here. Put in a row now, another in 2 weeks, a third in 4.

June will be here before you know it — start on
  • Starting indoors: zucchini

Instant PDF download. No spam, unsubscribe any time.

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.

McPherson County, Nebraska is in USDA Zone 5b. The average last spring frost is May 3 and the first fall frost is October 9, giving you a growing season of approximately 159 days.

At an elevation of 884 feet, McPherson County receives approximately 21.7 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Zucchini to ensure they mature before fall.

McPherson County, NE (Zone 5b) Moderate season
159 days
Last Spring Frost May 3
159 growing days
First Fall Frost October 9
Share this guide:

McPherson County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (39 days to spare)
Start indoors: Mar 26 Transplant: May 14 🍅 Harvest: Jul 2 – Aug 27
Recommended (50%) ✓ Fits season (40 days to spare)
Start indoors: Mar 29 Transplant: May 17 🍅 Harvest: Jul 5 – Aug 30
Safe Start (90%) ✓ Fits season (37 days to spare)
Start indoors: Apr 13 Transplant: Jun 1 🍅 Harvest: Jul 20 – Sep 14

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 McPherson County

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

Soil pH

Your soil pH (6.7–7.5) is within Zucchini's preferred range (6.0–7.5).

Soil Texture

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

Drainage

Drainage is adequate for Zucchini.

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 159-day season

Sow every 5.1 weeks. Last sowing by Aug 10 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.6″/week
You supply
1.2″/week
Watering frequency 2-3 times/week
Season total 1,676 gal / 100 sq ft
Drought risk

Water stress score is 10/10 — 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 1.8" 0" ❄️ Dormant
Feb 1.5" 0" ❄️ Dormant
Mar 2.1" 0" ❄️ Dormant
Apr 2.1" 0" ❄️ Dormant
May 5.2" 2.3" 2.9" 🚿 Regular watering
Jun 5.2" 1.5" 3.7" 🚿 Regular watering
Jul 5.2" 1.7" 3.5" 🚿 Regular watering
Aug 5.2" 2.3" 2.9" 🚿 Regular watering
Sep 5.2" 2" 3.2" 🚿 Regular watering
Oct 5.2" 1.8" 3.4" 🚿 Regular watering
Nov 1.4" 0" ❄️ Dormant
Dec 1.2" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in McPherson 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 ~682 GDD — county provides 2,067 GDD Excellent fit

Zucchini Planting Timeline — McPherson County, NE

Zucchini Planting Calendar

Activity When Date Range
Start Indoors March 29 Mar 29 – Apr 12
Transplant Outdoors May 17 May 17 – May 31
Direct Sow May 10 May 10 – May 31
Harvest July 5 Jul 5 – Aug 30

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
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.2"/week · 2-3 times/week

📅 Days to Maturity

45–60 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 5b

📆 Growing Season

159 days in McPherson County

Growing Tips for Zucchini in McPherson County

Direct sow Zucchini outdoors after May 03 in McPherson County when soil has warmed and frost danger has passed.

Your generous 159.0-day season in McPherson 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.

McPherson County receives only 22" of rain annually. Zucchini needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 McPherson County, NE?

McPherson County is in Zone 5b with an average last frost of May 3. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is McPherson County, NE?

McPherson County, Nebraska is in USDA Hardiness Zone 5b. The average last spring frost is May 3 and first fall frost is October 9.

🌱

Your McPherson County Garden Planner — Free

A 24-page printable planner built for McPherson 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for McPherson County, NE. 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.