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When to plant Kale in Leon County, FL

Kale planted in Leon County between February 18 and March 11 matures in 50–70 days — well before the November 21 first frost. A second sowing from September 26 to October 10 extends the harvest into fall.

When to Plant Kale in Leon County, FL

Kale
Leon County, Florida Zone 9a July

Your July game plan for Leon County, Florida

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Avg. last frost March 11
Avg. first frost November 21
Soil temp (4") 90°F
Watering Low
Pest pressure High
Daylight 13.8 hrs
  1. Basket week: kale

    If you can't use it all right away, check the food-preservation section of your planner.

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Kale is an exceptionally hardy, nutrient-dense green available in curly, lacinato, and Russian varieties. It tolerates heavy frost and often tastes sweeter after cold exposure.

Leon County, Florida is in USDA Zone 9a. The average last spring frost is March 11 and the first fall frost is November 21, giving you a growing season of approximately 255 days.

At an elevation of 250 feet, Leon County receives approximately 53.9 inches of rainfall annually with predominantly sand soil. Summer highs average 95°F, so Kale may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Kale will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kale root diseases.

Leon County, FL (Zone 9a) Long season
255 days
Last Spring Frost March 11
255 growing days
First Fall Frost November 21

Leon County Soil Profile

Soil Type

Sand

Soil pH

4.8-5.7

Drainage

Well Drained

Kale Planting Risk Windows

Early Start (70% safe) ✓ Fits season (141 days to spare)
Start indoors: Feb 3 Transplant: Mar 3 🍅 Harvest: Apr 28 – Jun 23
Recommended (50%) ✓ Fits season (143 days to spare)
Start indoors: Feb 11 Transplant: Mar 11 🍅 Harvest: May 6 – Jul 1
Safe Start (90%) ✓ Fits season (140 days to spare)
Start indoors: Mar 7 Transplant: Apr 4 🍅 Harvest: May 30 – Jul 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 Leon County

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

Soil pH

Your soil pH (4.8–5.7) is more acidic than Kale prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Kale.

Organic Matter

Organic matter is low (1.3%). Add 2-3 inches of compost before planting Kale.

How to Plant Kale

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Kale

6
successive plantings in your 255-day season

Sow every 5.7 weeks. Last sowing by Sep 12 to harvest before frost.

For a dedicated fall crop, sow by Sep 26.

Kale Water Budget

Plant needs
0.8″/week
Rainfall provides
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 345 gal / 100 sq ft

Monthly Watering Guide for Kale

Kale needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Kale Needs Rainfall You Supplement Action
Jan 2.2" 0" ❄️ Dormant
Feb 3.3" 0" ❄️ Dormant
Mar 3.5" 3" 0.5" 💧 Light watering
Apr 3.5" 2.4" 1.1" 💧 Light watering
May 3.5" 4.1" 0" ✅ Rainfall sufficient
Jun 3.5" 7.2" 0" ✅ Rainfall sufficient
Jul 3.5" 7.6" 0" ✅ Rainfall sufficient
Aug 3.5" 7.5" 0" ✅ Rainfall sufficient
Sep 3.5" 6.9" 0" ✅ Rainfall sufficient
Oct 3.5" 5.2" 0" ✅ Rainfall sufficient
Nov 3.5" 2.1" 1.4" 💧 Light watering
Dec 2.6" 0" ❄️ Dormant

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

Kale 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.

Kale needs ~1,275 GDD — county provides 5,418 GDD Excellent fit

Kale Planting Timeline — Leon County, FL

Kale Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 – Feb 25
Transplant Outdoors March 11 Mar 11 – Mar 25
Direct Sow February 18 Feb 18 – Mar 11
Harvest May 6 May 6 – Jul 1
Fall Sowing September 26 Sep 26 – Oct 10

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Only during dry spells

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

255 days in Leon County

Growing Tips for Kale in Leon County

Direct sow Kale outdoors after March 11 in Leon County when soil has warmed and frost danger has passed.

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

Summer highs in Leon County reach 95°F — grow Kale as a spring or fall crop. Use shade cloth if planting in summer.

Common pests for Kale in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow or transplant in early spring or late summer. Harvest outer leaves first to keep plants productive. Kale overwinters in many climates and can provide greens all year.

Companion Planting

Good Companions

Avoid Planting Near

  • Strawberries
  • Tomatoes

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Kale Seeds
Life Cycle Biennial
Pollination Cross-Pollinated (insects)
How to Collect Allow 2nd year flower stalks to dry. Harvest pods when tan.
Storage Store airtight; viable 5 years at 35°F, under 50% humidity.

Isolate 1/2 mile from other brassicas (broccoli, cabbage, etc.) — they all cross.

Frequently Asked Questions

When should I plant Kale in Leon County, FL?

Leon County is in Zone 9a with an average last frost of March 11. Plan your Kale planting based on this frost date — see the calendar above for exact timing.

What planting zone is Leon County, FL?

Leon County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 11 and first fall frost is November 21.

When should I plant Kale in Leon County, FL?

In Leon County, FL, plant Kale after the last frost (around March 11) and before the first frost (around November 21). Best results when soil holds above 50°F.

What growing zone is Leon County, FL for Kale?

Leon County sits in USDA Zone 9a. Kale grows reliably in zones 2a through 11b, so it's a good fit here.

Can Kale grow in Leon County's climate?

Yes — Kale grows well in Leon County's temperate climate. Leon County averages a 255-day frost-free season, with last frost around March 11 and first frost around November 21.

🌱

Your Leon County Garden Planner — Free

A 22-page printable planner built for Leon County (Zone 9a). 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 Leon County, FL. Local conditions may vary. Last updated: July 2026.

Sources & credits

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