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When to Plant Zucchini in Otoe County, NE

Otoe County, Nebraska Zone 6a May

Your May game plan for Otoe County, Nebraska

Welcome to May in Zone 6a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 24
Avg. first frost October 10
Soil temp (4") 57°F
Watering Moderate
Pest pressure Low
Daylight 14.3 hrs
  1. Harden off and plant zucchini

    Your last frost (April 24) has passed. These warm-season crops can handle outdoor soil now.

  2. Plant zucchini from seed, right in the garden

    Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.

  3. Get zucchini seeds going inside

    Give them 6–8 weeks indoors before the last frost and you'll transplant into warm soil with seedlings that are already leaping.

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.

Otoe County, Nebraska is in USDA Zone 6a. The average last spring frost is April 24 and the first fall frost is October 10, giving you a growing season of approximately 169 days.

At an elevation of 550 feet, Otoe County receives approximately 27.1 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Zucchini to ensure they mature before fall.

Otoe County, NE (Zone 6a) Moderate season
169 days
Last Spring Frost April 24
169 growing days
First Fall Frost October 10

Otoe County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (46 days to spare)
Start indoors: Mar 17 Transplant: May 5 🍅 Harvest: Jun 23 – Aug 18
Recommended (50%) ✓ Fits season (50 days to spare)
Start indoors: Mar 20 Transplant: May 8 🍅 Harvest: Jun 26 – Aug 21
Safe Start (90%) ✓ Fits season (45 days to spare)
Start indoors: Apr 6 Transplant: May 25 🍅 Harvest: Jul 13 – Sep 7

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 Otoe County

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

Soil pH

Your soil pH (6.5–7.3) is within Zucchini's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is excellent (4.2%) — Zucchini will thrive.

How to Plant Zucchini

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

Succession Planting Zucchini

4
successive plantings in your 169-day season

Sow every 5.1 weeks. Last sowing by Aug 11 to harvest before frost.

Plant Water Budget

Plant needs
1.2″/week
Rainfall provides
0.7″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 792 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 0.7" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 2" 0" ❄️ Dormant
Apr 5.2" 2.8" 2.4" 💧 Light watering
May 5.2" 3.5" 1.7" 💧 Light watering
Jun 5.2" 4.7" 0.5" 💧 Light watering
Jul 5.2" 3.7" 1.5" 💧 Light watering
Aug 5.2" 3" 2.2" 💧 Light watering
Sep 5.2" 2.6" 2.6" 🚿 Regular watering
Oct 5.2" 1.6" 3.6" 🚿 Regular watering
Nov 1" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Otoe 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 ~643 GDD — county provides 2,070 GDD Excellent fit

Zucchini Planting Timeline — Otoe County, NE

Zucchini Planting Calendar

Activity When Date Range
Start Indoors March 20 Mar 20 – Apr 3
Transplant Outdoors May 8 May 8 – May 22
Direct Sow May 1 May 1 – May 22
Harvest June 26 Jun 26 – Aug 21

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 Harvest
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 6a

📆 Growing Season

169 days in Otoe County

Growing Tips for Zucchini in Otoe County

Direct sow Zucchini outdoors after April 24 in Otoe County when soil has warmed and frost danger has passed.

Your generous 169.0-day season in Otoe 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 Otoe County, NE?

Otoe County is in Zone 6a with an average last frost of April 24. Plan your Zucchini planting based on this frost date — see the calendar above for exact timing.

What planting zone is Otoe County, NE?

Otoe County, Nebraska is in USDA Hardiness Zone 6a. The average last spring frost is April 24 and first fall frost is October 10.

🌱

Your Otoe County Garden Planner — Free

A 24-page printable planner built for Otoe County (Zone 6a). 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 Otoe 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.