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When to Plant Eggplant in Nelson County, KY

Nelson County, Kentucky Zone 7a May

Your May game plan for Nelson County, Kentucky

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

Avg. last frost April 6
Avg. first frost October 31
Soil temp (4") 59°F
Watering Moderate
Pest pressure Low
Daylight 14 hrs
Get ahead of June
  • Starting indoors: eggplant
  • First harvests: 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.

Nelson County, Kentucky is in USDA Zone 7a. The average last spring frost is April 6 and the first fall frost is October 31, giving you a growing season of approximately 208 days.

At an elevation of 2,068 feet, Nelson County receives approximately 46.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Eggplant during the growing season.

Nelson County, KY (Zone 7a) Long season
208 days
Last Spring Frost April 6
208 growing days
First Fall Frost October 31

Nelson County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (64 days to spare)
Start indoors: Jan 25 Transplant: Apr 12 🍅 Harvest: Jun 21 – Aug 23
Recommended (50%) ✓ Fits season (61 days to spare)
Start indoors: Feb 2 Transplant: Apr 20 🍅 Harvest: Jun 29 – Aug 31
Safe Start (90%) ✓ Fits season (59 days to spare)
Start indoors: Feb 15 Transplant: May 3 🍅 Harvest: Jul 12 – Sep 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 Nelson County

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

Soil pH

Your soil pH (5.7–7.0) is within Eggplant's preferred range (5.5–7.0).

Soil Texture

The silt loam soil in Nelson 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 (2.4%). 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 208-day season

Sow every 7.4 weeks. Last sowing by Aug 07 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.9″/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 4.2" 0" ❄️ Dormant
Feb 3.3" 0" ❄️ Dormant
Mar 4.8" 0" ❄️ Dormant
Apr 4.8" 3.9" 0.9" 💧 Light watering
May 4.8" 3.3" 1.5" 💧 Light watering
Jun 4.8" 4" 0.8" 💧 Light watering
Jul 4.8" 4.5" 0.3" 💧 Light watering
Aug 4.8" 4.6" 0.2" 💧 Light watering
Sep 4.8" 3.4" 1.4" 💧 Light watering
Oct 4.8" 3.2" 1.6" 💧 Light watering
Nov 3.9" 0" ❄️ Dormant
Dec 3.2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Nelson 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 ~1,200 GDD — county provides 3,328 GDD Excellent fit

Eggplant Planting Timeline — Nelson County, KY

Eggplant Planting Calendar

Activity When Date Range
Start Indoors February 2 Feb 2 – Feb 16
Transplant Outdoors April 20 Apr 20 – May 4
Direct Sow April 13 Apr 13 – May 4
Harvest June 29 Jun 29 – Aug 31

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · Natural rainfall sufficient

📅 Days to Maturity

65–85 days

🧪 Soil pH

Needs 5.5–7 · Your soil: ideal

🗺️ USDA Zone

Zone 7a

📆 Growing Season

208 days in Nelson County

Growing Tips for Eggplant in Nelson County

Direct sow Eggplant outdoors after April 06 in Nelson 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 Nelson County, KY?

Nelson County is in Zone 7a with an average last frost of April 6. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.

What planting zone is Nelson County, KY?

Nelson County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 6 and first fall frost is October 31.

🌱

Your Nelson County Garden Planner — Free

A 24-page printable planner built for Nelson County (Zone 7a). 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 Nelson County, KY. 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.