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When to Plant Eggplant in Flagler County, FL

Flagler County, Florida Zone 9b May

Top priorities for Flagler County, Florida gardeners in May

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Avg. last frost February 5
Avg. first frost December 17
Soil temp (4") 77°F
Watering Moderate
Pest pressure High
Daylight 13.5 hrs
  1. Pick eggplant

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

Coming up in June — start thinking about
  • 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.

Flagler County, Florida is in USDA Zone 9b. The average last spring frost is February 5 and the first fall frost is December 17, giving you a growing season of approximately 315 days.

At an elevation of 134 feet, Flagler County receives approximately 54.2 inches of rainfall annually with predominantly sand soil. Summer highs average 99°F, so Eggplant may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Eggplant will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Eggplant root diseases.

Flagler County, FL (Zone 9b) Year-round
315 days
Last Spring Frost February 5
315 growing days
First Fall Frost December 17

Flagler County Soil Profile

Soil Type

Sand

Soil pH

5.1-5.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (180 days to spare)
Start indoors: Dec 11 Transplant: Jan 29 🍅 Harvest: Apr 9 – Jun 11
Recommended (50%) ✓ Fits season (175 days to spare)
Start indoors: Dec 25 Transplant: Feb 12 🍅 Harvest: Apr 23 – Jun 25
Safe Start (90%) ✓ Fits season (161 days to spare)
Start indoors: Jan 17 Transplant: Mar 7 🍅 Harvest: May 16 – Jul 18

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 Flagler County

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

Soil pH

Your soil pH (5.1–5.7) is more acidic than Eggplant prefers (5.5–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Flagler County warms quickly in spring but drains fast. Eggplant will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Eggplant.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting Eggplant.

How to Plant Eggplant

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

Succession Planting Eggplant

5
successive plantings in your 315-day season

Sow every 7.4 weeks. Last sowing by Sep 23 to harvest before frost.

Plant Water Budget

Plant needs
1.1″/week
Rainfall provides
0.7″/week
You supply
0.7″/week
Watering frequency 2-3 times/week
Season total 1,996 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 2.7" 0" ❄️ Dormant
Feb 4.8" 2.5" 2.3" 💧 Light watering
Mar 4.8" 3" 1.8" 💧 Light watering
Apr 4.8" 2.2" 2.6" 🚿 Regular watering
May 4.8" 3.7" 1.1" 💧 Light watering
Jun 4.8" 8.8" 0" ✅ Rainfall sufficient
Jul 4.8" 7.7" 0" ✅ Rainfall sufficient
Aug 4.8" 7.4" 0" ✅ Rainfall sufficient
Sep 4.8" 6.9" 0" ✅ Rainfall sufficient
Oct 4.8" 4.7" 0.1" 💧 Light watering
Nov 4.8" 2" 2.8" 🚿 Regular watering
Dec 4.8" 2.5" 2.3" 💧 Light watering

Water needs are for active growing months only (Feb–Dec in Flagler 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 ~1,819 GDD — county provides 7,663 GDD Excellent fit

Eggplant Planting Timeline — Flagler County, FL

Eggplant Planting Calendar

Activity When Date Range
Start Indoors December 25 Dec 25 – Jan 8
Transplant Outdoors February 12 Feb 12 – Feb 26
Direct Sow February 5 Feb 5 – Feb 26
Harvest April 23 Apr 23 – Jun 25

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.1"/week · 2-3 times/week

📅 Days to Maturity

65–85 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

315 days in Flagler County

Growing Tips for Eggplant in Flagler County

Direct sow Eggplant outdoors after February 05 in Flagler County when soil has warmed and frost danger has passed.

Sandy soil in Flagler County dries quickly — mulch Eggplant with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 99°F in Flagler County, provide afternoon shade for Eggplant and water deeply in the morning.

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 Flagler County, FL?

Flagler County is in Zone 9b with an average last frost of February 5. Plan your Eggplant planting based on this frost date — see the calendar above for exact timing.

What planting zone is Flagler County, FL?

Flagler County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is February 5 and first fall frost is December 17.

🌱

Your Flagler County Garden Planner — Free

A 24-page printable planner built for Flagler County (Zone 9b). 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 Flagler County, FL. 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.