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When to plant Leeks in Mayo,

Plant Leeks in Mayo, when soil hits 50°F — usually February 11. Continue planting through March 4 for the spring crop. A second sowing from October 1 to October 15 extends the harvest into fall.

When to Plant Leeks in Mayo, FL

Leeks
Mayo, FL Zone 9a June

Your June planting checklist for Mayo, FL

We've pulled the most time-sensitive tasks for Mayo, FL this June and put them front and centre. Tackle them in order.

Avg. last frost March 4
Avg. first frost November 26
Soil temp (4") 83°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. Pick leeks

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

Coming up in July — start thinking about
  • First harvests: leeks

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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.

Mayo, Florida is in USDA Zone 9a. The average last spring frost is March 4 and the first fall frost is November 26, giving you a growing season of approximately 267 days.

At an elevation of 217 feet, Lafayette County receives approximately 57.2 inches of rainfall annually with predominantly sand soil. Summer highs average 94°F, providing good warmth for Leeks during the growing season. 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.

Mayo, FL (Zone 9a) Long season
267 days
Last Spring Frost March 4
267 growing days
First Fall Frost November 26
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Mayo Soil Profile

Soil Type

Sand

Soil pH

5-6.2

Drainage

Well Drained

Leeks Planting Risk Windows

Early Start (70% safe) ✓ Fits season (102 days to spare)
Start indoors: Jan 22 Transplant: Feb 19 🍅 Harvest: May 21 – Aug 6
Recommended (50%) ✓ Fits season (99 days to spare)
Start indoors: Feb 4 Transplant: Mar 4 🍅 Harvest: Jun 3 – Aug 19
Safe Start (90%) ✓ Fits season (103 days to spare)
Start indoors: Feb 24 Transplant: Mar 24 🍅 Harvest: Jun 23 – Sep 8

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 Mayo

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

Soil pH

Your soil pH (5.0–6.2) is more acidic than Leeks prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Lafayette 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 (1.5%). 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
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 400 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 2.8" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 3.5" 3.4" 0.1" 💧 Light watering
Apr 3.5" 2.8" 0.7" 💧 Light watering
May 3.5" 3.5" 0" ✅ Rainfall sufficient
Jun 3.5" 8" 0" ✅ Rainfall sufficient
Jul 3.5" 7.7" 0" ✅ Rainfall sufficient
Aug 3.5" 8.5" 0" ✅ Rainfall sufficient
Sep 3.5" 6.9" 0" ✅ Rainfall sufficient
Oct 3.5" 5.6" 0" ✅ Rainfall sufficient
Nov 3.5" 2.4" 1.1" 💧 Light watering
Dec 2.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Lafayette 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 ~2,460 GDD — county provides 5,473 GDD Excellent fit

Leeks Planting Timeline — Mayo, FL

Leeks Planting Calendar

Activity When Date Range
Start Indoors February 4 Feb 4 – Feb 18
Transplant Outdoors March 4 Mar 4 – Mar 18
Direct Sow February 11 Feb 11 – Mar 4
Harvest June 3 Jun 3 – Aug 19
Fall Sowing October 1 Oct 1 – Oct 15

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
June Harvest
July Harvest
August Harvest
September
October Fall Sowing
November
December
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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 9a

📆 Growing Season

267 days in Lafayette County

Growing Tips for Leeks in Mayo

Direct sow Leeks outdoors after March 04 in Lafayette County when soil has warmed and frost danger has passed.

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

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 Mayo, ?

In Mayo, , plant Leeks after the last frost (around March 4) and before the first frost (around November 26). Best results when soil holds above 50°F.

What growing zone is Mayo, for Leeks?

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

Can Leeks grow in Mayo's climate?

Yes — Leeks grows well in Mayo's temperate climate. Mayo averages a 267-day frost-free season, with last frost around March 4 and first frost around November 26.

🌱

Your Lafayette County Garden Planner — Free

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