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When to Plant Eggplant in Wallace County, KS

Wallace County, Kansas Zone 6a May

Wallace County, Kansas gardeners: here's your May plan

We've pulled the most time-sensitive tasks for Wallace County, Kansas this May and put them front and centre. Tackle them in order.

Avg. last frost May 1
Avg. first frost October 9
Soil temp (4") 61°F
Watering Low
Pest pressure Low
Daylight 14.1 hrs
  1. Move eggplant from tray to bed

    Frost risk is low now in Wallace County, Kansas. If you've been covering beds overnight, you can stop.

  2. Plant eggplant from seed, right in the garden

    Your soil is 61°F — warm enough for these to germinate without babying.

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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.

Wallace County, Kansas is in USDA Zone 6a. The average last spring frost is May 1 and the first fall frost is October 9, giving you a growing season of approximately 161 days.

At an elevation of 1,023 feet, Wallace County receives approximately 33.9 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.

Wallace County, KS (Zone 6a) Moderate season
161 days
Last Spring Frost May 1
161 growing days
First Fall Frost October 9

Wallace County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (15 days to spare)
Start indoors: Feb 15 Transplant: May 10 🍅 Harvest: Jul 19 – Sep 20
Recommended (50%) ✓ Fits season (14 days to spare)
Start indoors: Feb 20 Transplant: May 15 🍅 Harvest: Jul 24 – Sep 25
Safe Start (90%) ✓ Fits season (15 days to spare)
Start indoors: Mar 5 Transplant: May 28 🍅 Harvest: Aug 6 – Oct 8

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 Wallace County

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

Soil pH

Your soil pH (6.7–7.2) overlaps with Eggplant's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.4%) — Eggplant will thrive.

How to Plant Eggplant

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

Succession Planting Eggplant

2
successive plantings in your 161-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
0.3″/week
Watering frequency Only during dry spells
Season total 371 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

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 2.6" 0" ❄️ Dormant
Feb 2.1" 0" ❄️ Dormant
Mar 2.9" 0" ❄️ Dormant
Apr 3.8" 0" ❄️ Dormant
May 4.8" 4.4" 0.4" 💧 Light watering
Jun 4.8" 2.5" 2.3" 💧 Light watering
Jul 4.8" 2.5" 2.3" 💧 Light watering
Aug 4.8" 3.1" 1.7" 💧 Light watering
Sep 4.8" 2.7" 2.1" 💧 Light watering
Oct 4.8" 2.8" 2" 💧 Light watering
Nov 2.5" 0" ❄️ Dormant
Dec 1.9" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Wallace 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 1,972 GDD Excellent fit

Eggplant Planting Timeline — Wallace County, KS

Eggplant Planting Calendar

Activity When Date Range
Start Indoors February 20 Feb 20 – Mar 6
Transplant Outdoors May 15 May 15 – May 29
Direct Sow May 8 May 8 – May 29
Harvest July 24 Jul 24 – Sep 25

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors
April
May Transplant Outdoors Direct Sow
June
July Harvest
August Harvest
September Harvest
October
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 6a

📆 Growing Season

161 days in Wallace County

Growing Tips for Eggplant in Wallace County

Direct sow Eggplant outdoors after May 01 in Wallace 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 Wallace County, KS?

Wallace County is in Zone 6a with an average last frost of May 1. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.

What planting zone is Wallace County, KS?

Wallace County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is May 1 and first fall frost is October 9.

🌱

Your Wallace County Garden Planner — Free

A 24-page printable planner built for Wallace 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.

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 Wallace County, KS. 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.