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When to Plant Eggplant in Keya Paha County, NE

Keya Paha County, Nebraska Zone 5a May

What to do in May

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

Avg. last frost May 10
Avg. first frost October 9
Soil temp (4") 55°F
Watering Low
Pest pressure Low
Daylight 14.5 hrs
  1. Move eggplant from tray to bed

    Your last frost (May 10) has passed. These warm-season crops can handle outdoor soil now.

  2. Put eggplant seeds straight in the ground

    Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.

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Eggplant is a heat-loving solanaceous crop that produces glossy fruits in purple, white, or striped varieties. It requires long, warm growing seasons for best production.

Keya Paha County, Nebraska is in USDA Zone 5a. The average last spring frost is May 10 and the first fall frost is October 9, giving you a growing season of approximately 152 days.

At an elevation of 1,079 feet, Keya Paha County receives approximately 31.8 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Eggplant to ensure they mature before fall.

Keya Paha County, NE (Zone 5a) Moderate season
152 days
Last Spring Frost May 10
152 growing days
First Fall Frost October 9

Keya Paha County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (9 days to spare)
Start indoors: Feb 19 Transplant: May 14 🍅 Harvest: Jul 23 – Sep 24
Recommended (50%) ✓ Fits season (5 days to spare)
Start indoors: Mar 1 Transplant: May 24 🍅 Harvest: Aug 2 – Oct 4
Safe Start (90%) ✓ Fits season (10 days to spare)
Start indoors: Mar 10 Transplant: Jun 2 🍅 Harvest: Aug 11 – Oct 13

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 Keya Paha County

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

Soil pH

Your soil pH (6.5–7.5) overlaps with Eggplant's range (5.5–7.0), though not a perfect match.

Soil Texture

The loam soil in Keya Paha County is excellent for Eggplant — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is excellent (4.1%) — Eggplant will thrive.

How to Plant Eggplant

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

Succession Planting Eggplant

2
successive plantings in your 152-day season

Sow every 7.4 weeks. Last sowing by Jul 16 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 299 gal / 100 sq ft

Monthly Watering Guide for Eggplant

Eggplant needs approximately 1.1 inches of water per week (4.8" per month). Here's how your county's rainfall compares month by month.

Month Eggplant Needs Rainfall You Supplement Action
Jan 0.8" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 1.7" 0" ❄️ Dormant
Apr 3.2" 0" ❄️ Dormant
May 4.8" 4.7" 0.1" 💧 Light watering
Jun 4.8" 5.4" 0" ✅ Rainfall sufficient
Jul 4.8" 4.3" 0.5" 💧 Light watering
Aug 4.8" 3.9" 0.9" 💧 Light watering
Sep 4.8" 3.2" 1.6" 💧 Light watering
Oct 4.8" 1.8" 3" 🚿 Regular watering
Nov 1" 0" ❄️ Dormant
Dec 0.8" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Keya Paha County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Eggplant 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.

Eggplant needs ~919 GDD — county provides 1,862 GDD Excellent fit

Eggplant Planting Timeline — Keya Paha County, NE

Eggplant Planting Calendar

Activity When Date Range
Start Indoors March 1 Mar 1 – Mar 15
Transplant Outdoors May 24 May 24 – Jun 7
Direct Sow May 17 May 17 – Jun 7
Harvest August 2 Aug 2 – Oct 4

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Only during dry spells

📅 Days to Maturity

65–85 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

152 days in Keya Paha County

Growing Tips for Eggplant in Keya Paha County

Direct sow Eggplant outdoors after May 10 in Keya Paha County when soil has warmed and frost danger has passed.

Common pests for Eggplant in this region include tomato hornworm and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 8-10 weeks before last frost. Transplant only after nighttime temperatures stay above 55F. Mulch to retain moisture and warmth around roots.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel
  • Kohlrabi

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Eggplant in Keya Paha County, NE?

Keya Paha County is in Zone 5a with an average last frost of May 10. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.

What planting zone is Keya Paha County, NE?

Keya Paha County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is May 10 and first fall frost is October 9.

🌱

Your Keya Paha County Garden Planner — Free

A 24-page printable planner built for Keya Paha County (Zone 5a). 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 Keya Paha 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.