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When to plant Leeks in Coleman, FL

The best window to plant Leeks in Coleman, is January 16–February 6, when soil warms to 50°F. Last frost typically hits February 6; first frost December 6. A second sowing from October 11 to October 25 extends the harvest into fall.

When to Plant Leeks in Coleman, FL

Leeks
Sumter County, Florida Zone 9b July

Your July planting checklist for Sumter County, Florida

Your garden in Sumter County, Florida is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost February 6
Avg. first frost December 6
Soil temp (4") 93°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Collect leeks at their peak

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

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Leeks are a mild, sweet allium that produces long white shanks. They are more refined than onions and are a key ingredient in soups, stews, and gratins.

Coleman, Florida is in USDA Zone 9b. The average last spring frost is February 6 and the first fall frost is December 6, giving you a growing season of approximately 303 days.

At an elevation of 463 feet, Sumter County receives approximately 60.9 inches of rainfall annually with predominantly sand soil. Summer highs average 96°F, so Leeks may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Leeks will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Leeks root diseases.

Coleman, FL (Zone 9b) Year-round
303 days
Last Spring Frost February 6
303 growing days
First Fall Frost December 6

Coleman Soil Profile

Soil Type

Sand

Soil pH

5-6.1

Drainage

Well Drained

Leeks Planting Risk Windows

Early Start (70% safe) ✓ Fits season (138 days to spare)
Start indoors: Dec 27 Transplant: Jan 24 🍅 Harvest: Apr 25 – Jul 11
Recommended (50%) ✓ Fits season (135 days to spare)
Start indoors: Jan 9 Transplant: Feb 6 🍅 Harvest: May 8 – Jul 24
Safe Start (90%) ✓ Fits season (128 days to spare)
Start indoors: Feb 4 Transplant: Mar 4 🍅 Harvest: Jun 3 – Aug 19

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 Coleman

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

Soil pH

Your soil pH (5.0–6.1) is more acidic than Leeks prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Leeks.

Organic Matter

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

How to Plant Leeks

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

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

Leeks Water Budget

Plant needs
0.8″/week
Rainfall provides
0.8″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 645 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Leeks

Leeks 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 Leeks Needs Rainfall You Supplement Action
Jan 3.2" 0" ❄️ Dormant
Feb 3.5" 3.3" 0.2" 💧 Light watering
Mar 3.5" 3.6" 0" ✅ Rainfall sufficient
Apr 3.5" 2.7" 0.8" 💧 Light watering
May 3.5" 4.3" 0" ✅ Rainfall sufficient
Jun 3.5" 8" 0" ✅ Rainfall sufficient
Jul 3.5" 8.7" 0" ✅ Rainfall sufficient
Aug 3.5" 8.5" 0" ✅ Rainfall sufficient
Sep 3.5" 7.6" 0" ✅ Rainfall sufficient
Oct 3.5" 6.1" 0" ✅ Rainfall sufficient
Nov 3.5" 2.6" 0.9" 💧 Light watering
Dec 3.5" 2.5" 1" 💧 Light watering

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

Leeks 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.

Leeks needs ~2,640 GDD — county provides 6,688 GDD Excellent fit

Leeks Planting Timeline — Coleman, FL

Leeks Planting Calendar

Activity When Date Range
Start Indoors January 9 Jan 9 – Jan 23
Transplant Outdoors February 6 Feb 6 – Feb 20
Direct Sow January 16 Jan 16 – Feb 6
Harvest May 8 May 8 – Jul 24
Fall Sowing October 11 Oct 11 – Oct 25

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Only during dry spells

📅 Days to Maturity

90–150 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

303 days in Sumter County

Growing Tips for Leeks in Coleman

Direct sow Leeks outdoors after February 06 in Sumter County when soil has warmed and frost danger has passed.

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

With summer highs reaching 96°F in Sumter County, provide afternoon shade for Leeks and water deeply in the morning.

Common pests for Leeks in this region include onion maggots and thrips. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 10-12 weeks before last frost. Transplant into trenches and hill soil around stems as they grow to increase the white portion. Harvest as needed.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

Check more plant combinations with our Companion Planting Checker →

When should I plant Leeks in Coleman, FL?

In Coleman, FL, plant Leeks after the last frost (around February 6) and before the first frost (around December 6). Best results when soil holds above 50°F.

What growing zone is Coleman, FL for Leeks?

Coleman sits in USDA Zone 9b. Leeks grows reliably in zones 3a through 10b, so it's a good fit here.

Can Leeks grow in Coleman's climate?

Yes — Leeks grows well in Coleman's temperate climate. Coleman averages a 304-day frost-free season, with last frost around February 6 and first frost around December 6.

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A 22-page printable planner built for Sumter 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 Sumter County, FL. Local conditions may vary. Last updated: July 2026.