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When to Plant Eggplant in Montgomery County, AL

Montgomery County, Alabama Zone 8b May

Your May planting checklist for Montgomery County, Alabama

Here's what deserves your attention in Montgomery County, Alabama this month. Everything below is tailored to Zone 8b and timed around your local frost dates.

Avg. last frost March 10
Avg. first frost November 15
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Sow eggplant in trays indoors

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

June prep starts now
  • 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.

Montgomery County, Alabama is in USDA Zone 8b. The average last spring frost is March 10 and the first fall frost is November 15, giving you a growing season of approximately 250 days.

At an elevation of 468 feet, Montgomery County receives approximately 62 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Eggplant during the growing season. Clay soil retains moisture well for Eggplant, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Eggplant root diseases.

Montgomery County, AL (Zone 8b) Long season
250 days
Last Spring Frost March 10
250 growing days
First Fall Frost November 15

Montgomery County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (103 days to spare)
Start indoors: Jan 1 Transplant: Mar 19 🍅 Harvest: May 28 – Jul 30
Recommended (50%) ✓ Fits season (103 days to spare)
Start indoors: Jan 6 Transplant: Mar 24 🍅 Harvest: Jun 2 – Aug 4
Safe Start (90%) ✓ Fits season (98 days to spare)
Start indoors: Jan 27 Transplant: Apr 14 🍅 Harvest: Jun 23 – Aug 25

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 Montgomery County

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

Soil pH

Your soil pH (5.6–6.3) is within Eggplant's preferred range (5.5–7.0).

Soil Texture

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

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Eggplant.

How to Plant Eggplant

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

Succession Planting Eggplant

4
successive plantings in your 250-day season

Sow every 7.4 weeks. Last sowing by Aug 22 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 130 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 5.7" 0" ❄️ Dormant
Feb 4.6" 0" ❄️ Dormant
Mar 4.8" 7.1" 0" ✅ Rainfall sufficient
Apr 4.8" 5.2" 0" ✅ Rainfall sufficient
May 4.8" 4.9" 0" ✅ Rainfall sufficient
Jun 4.8" 4.9" 0" ✅ Rainfall sufficient
Jul 4.8" 6.2" 0" ✅ Rainfall sufficient
Aug 4.8" 5.7" 0" ✅ Rainfall sufficient
Sep 4.8" 4.2" 0.6" 💧 Light watering
Oct 4.8" 3.6" 1.2" 💧 Light watering
Nov 4.8" 5.1" 0" ✅ Rainfall sufficient
Dec 4.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Montgomery 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 ~1,425 GDD — county provides 4,750 GDD Excellent fit

Eggplant Planting Timeline — Montgomery County, AL

Eggplant Planting Calendar

Activity When Date Range
Start Indoors January 6 Jan 6 – Jan 20
Transplant Outdoors March 24 Mar 24 – Apr 7
Direct Sow March 17 Mar 17 – Apr 7
Harvest June 2 Jun 2 – Aug 4

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

Month-by-Month Timeline

MonthActivities
January Start Indoors
February
March Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May
June Harvest
July Harvest
August Harvest
September
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: ideal

🗺️ USDA Zone

Zone 8b

📆 Growing Season

250 days in Montgomery County

Growing Tips for Eggplant in Montgomery County

Direct sow Eggplant outdoors after March 10 in Montgomery County when soil has warmed and frost danger has passed.

With Montgomery County's clay soil (27% clay), work in 3-4 inches of compost before planting Eggplant. Avoid tilling when soil is wet to prevent compaction.

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 Montgomery County, AL?

Montgomery County is in Zone 8b with an average last frost of March 10. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.

What planting zone is Montgomery County, AL?

Montgomery County, Alabama is in USDA Hardiness Zone 8b. The average last spring frost is March 10 and first fall frost is November 15.

🌱

Your Montgomery County Garden Planner — Free

A 24-page printable planner built for Montgomery County (Zone 8b). 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 Montgomery County, AL. 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.