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When to Plant Eggplant in Webster County, MO

Webster County, Missouri Zone 6b May

Your May game plan for Webster County, Missouri

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Webster County, Missouri.

Avg. last frost April 11
Avg. first frost October 22
Soil temp (4") 64°F
Watering Low
Pest pressure Low
Daylight 14 hrs
Coming up in June — start thinking about
  • Starting indoors: eggplant

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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.

Webster County, Missouri is in USDA Zone 6b. The average last spring frost is April 11 and the first fall frost is October 22, giving you a growing season of approximately 194 days.

At an elevation of 1,274 feet, Webster County receives approximately 38.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Eggplant during the growing season.

Webster County, MO (Zone 6b) Moderate season
194 days
Last Spring Frost April 11
194 growing days
First Fall Frost October 22

Webster County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (47 days to spare)
Start indoors: Jan 25 Transplant: Apr 19 🍅 Harvest: Jun 28 – Aug 30
Recommended (50%) ✓ Fits season (47 days to spare)
Start indoors: Jan 31 Transplant: Apr 25 🍅 Harvest: Jul 4 – Sep 5
Safe Start (90%) ✓ Fits season (49 days to spare)
Start indoors: Feb 12 Transplant: May 7 🍅 Harvest: Jul 16 – Sep 17

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 Webster County

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

Soil pH

Your soil pH (5.6–6.6) is within Eggplant's preferred range (5.5–7.0).

Soil Texture

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

Drainage

Drainage is adequate for Eggplant.

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Eggplant.

How to Plant Eggplant

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

Succession Planting Eggplant

3
successive plantings in your 194-day season

Sow every 7.4 weeks. Last sowing by Jul 29 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 1.6" 0" ❄️ Dormant
Feb 1.5" 0" ❄️ Dormant
Mar 2.8" 0" ❄️ Dormant
Apr 4.8" 4.2" 0.6" 💧 Light watering
May 4.8" 5" 0" ✅ Rainfall sufficient
Jun 4.8" 4.2" 0.6" 💧 Light watering
Jul 4.8" 4.4" 0.4" 💧 Light watering
Aug 4.8" 4.4" 0.4" 💧 Light watering
Sep 4.8" 3" 1.8" 💧 Light watering
Oct 4.8" 3" 1.8" 💧 Light watering
Nov 2.4" 0" ❄️ Dormant
Dec 1.8" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Webster 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 ~1,256 GDD — county provides 3,249 GDD Excellent fit

Eggplant Planting Timeline — Webster County, MO

Eggplant Planting Calendar

Activity When Date Range
Start Indoors January 31 Jan 31 – Feb 14
Transplant Outdoors April 25 Apr 25 – May 9
Direct Sow April 18 Apr 18 – May 9
Harvest July 4 Jul 4 – Sep 5

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February Start Indoors
March
April Transplant Outdoors Direct Sow
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 · Natural rainfall sufficient

📅 Days to Maturity

65–85 days

🧪 Soil pH

Needs 5.5–7 · Your soil: ideal

🗺️ USDA Zone

Zone 6b

📆 Growing Season

194 days in Webster County

Growing Tips for Eggplant in Webster County

Direct sow Eggplant outdoors after April 11 in Webster 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 Webster County, MO?

Webster County is in Zone 6b with an average last frost of April 11. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.

What planting zone is Webster County, MO?

Webster County, Missouri is in USDA Hardiness Zone 6b. The average last spring frost is April 11 and first fall frost is October 22.

🌱

Your Webster County Garden Planner — Free

A 24-page printable planner built for Webster County (Zone 6b). 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 Webster County, MO. 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.