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When to plant Thai Basil in Lee County, FL

Aim to plant Thai Basil in Lee County on or after February 4; the window stays open through February 25. Lee County's 326-day frost-free season gives you plenty of room for a spring and fall cycle.

When to Plant Thai Basil in Lee County, FL

Lee County, Florida Zone 10b July

July to-do list for Lee County, Florida

Your Lee County, Florida garden is entering a new phase. Here's what's on the schedule for July and why each task matters now.

Avg. last frost January 28
Avg. first frost December 19
Soil temp (4") 95°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Plan the fall garden

    Make a planting map for August. Tomatoes, peppers, brassicas, lettuce, root crops all go in over the next 8 weeks. Soil amendments and irrigation prep happen now.

  2. Keep heat-survivor crops productive

    Daily harvest of okra and southern peas keeps plants producing. Let pods over-mature and the plant stops setting new fruit.

  3. Watch for hurricane prep season

    August-October is hurricane season. Stake young trees, secure rain barrels, and plan how to protect tender transplants from high winds.

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Thai basil has a distinctive anise-licorice flavor with sturdy purple stems and small leaves. It is essential in Thai, Vietnamese, and other Southeast Asian cuisines.

Lee County, Florida is in USDA Zone 10b. The average last spring frost is January 28 and the first fall frost is December 19, giving you a growing season of approximately 325 days.

At an elevation of 408 feet, Lee County receives approximately 61.6 inches of rainfall annually with predominantly sand soil. Summer highs average 86°F, providing good warmth for Thai Basil during the growing season. Sandy soil warms quickly in spring — great for early planting — but Thai Basil will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Thai Basil root diseases.

Lee County, FL (Zone 10b) Year-round
325 days
Last Spring Frost January 28
325 growing days
First Fall Frost December 19

Lee County Soil Profile

Soil Type

Sand

Soil pH

5.1-5.9

Drainage

Well Drained

Thai Basil Planting Risk Windows

Early Start (70% safe) ✓ Fits season (197 days to spare)
Start indoors: Dec 8 Transplant: Jan 26 🍅 Harvest: Mar 23 – May 25
Recommended (50%) ✓ Fits season (199 days to spare)
Start indoors: Dec 17 Transplant: Feb 4 🍅 Harvest: Apr 1 – Jun 3
Safe Start (90%) ✓ Fits season (171 days to spare)
Start indoors: Jan 18 Transplant: Mar 8 🍅 Harvest: May 3 – Jul 5

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 Lee County

How your county's soil matches Thai Basil's growing requirements.

Soil pH

Your soil pH (5.1–5.9) is more acidic than Thai Basil prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Thai Basil.

Organic Matter

Organic matter is low (1.4%). Add 2-3 inches of compost before planting Thai Basil.

How to Plant Thai Basil

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Thai Basil

7
successive plantings in your 325-day season

Sow every 5.7 weeks. Last sowing by Oct 05 to harvest before frost.

Thai Basil Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 1,469 gal / 100 sq ft

Monthly Watering Guide for Thai Basil

Thai Basil needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Thai Basil Needs Rainfall You Supplement Action
Jan 4.3" 3" 1.3" 💧 Light watering
Feb 4.3" 3.3" 1" 💧 Light watering
Mar 4.3" 3.6" 0.7" 💧 Light watering
Apr 4.3" 2.8" 1.5" 💧 Light watering
May 4.3" 4" 0.3" 💧 Light watering
Jun 4.3" 7.6" 0" ✅ Rainfall sufficient
Jul 4.3" 10" 0" ✅ Rainfall sufficient
Aug 4.3" 7.7" 0" ✅ Rainfall sufficient
Sep 4.3" 9.3" 0" ✅ Rainfall sufficient
Oct 4.3" 5.1" 0" ✅ Rainfall sufficient
Nov 4.3" 2.7" 1.6" 💧 Light watering
Dec 4.3" 2.5" 1.8" 💧 Light watering

Water needs are for active growing months only (Jan–Dec in Lee County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Thai Basil 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.

Thai Basil needs ~906 GDD — county provides 4,727 GDD Excellent fit

Thai Basil Planting Timeline — Lee County, FL

Thai Basil Planting Calendar

Activity When Date Range
Start Indoors December 17 Dec 17 – Dec 31
Transplant Outdoors February 4 Feb 4 – Feb 18
Direct Sow February 4 Feb 4 – Feb 25
Harvest April 1 Apr 1 – Jun 3

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
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"/week · 1-2 times/week

📅 Days to Maturity

50–75 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 10b

📆 Growing Season

325 days in Lee County

Growing Tips for Thai Basil in Lee County

Direct sow Thai Basil outdoors after January 28 in Lee County when soil has warmed and frost danger has passed.

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

General growing tips

Start seeds indoors or direct sow after last frost. Thai basil holds up better to heat in cooking than sweet basil. Pinch flowers to prolong leaf production.

Companion Planting

Good Companions

Avoid Planting Near

  • Rue
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Thai Basil in Lee County, FL?

Lee County is in Zone 10b with an average last frost of January 28. Plan your Thai Basil planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lee County, FL?

Lee County, Florida is in USDA Hardiness Zone 10b. The average last spring frost is January 28 and first fall frost is December 19.

When should I plant Thai Basil in Lee County, FL?

In Lee County, FL, plant Thai Basil after the last frost (around January 28) and before the first frost (around December 19). Best results when soil holds above 50°F.

What growing zone is Lee County, FL for Thai Basil?

Lee County sits in USDA Zone 10b. Thai Basil grows reliably in zones 4a through 11b, so it's a good fit here.

Can Thai Basil grow in Lee County's climate?

Yes — Thai Basil grows well in Lee County's temperate climate. Lee County averages a 326-day frost-free season, with last frost around January 28 and first frost around December 19.

🌱

Your Lee County Garden Planner — Free

A 22-page printable planner built for Lee County (Zone 10b). 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 Lee County, FL. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.