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When to Plant Leeks in Hickman County, KY

Hickman County, Kentucky Zone 7a May

What to do in May

May is a pivotal month for Hickman County, Kentucky gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 28
Avg. first frost October 31
Soil temp (4") 66°F
Watering Moderate
Pest pressure Moderate
Daylight 14 hrs
  1. Sow leeks in trays indoors

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

June will be here before you know it — start on
  • 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.

Hickman County, Kentucky is in USDA Zone 7a. The average last spring frost is March 28 and the first fall frost is October 31, giving you a growing season of approximately 217 days.

At an elevation of 1,219 feet, Hickman County receives approximately 51.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°F, providing good warmth for Leeks during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Leeks root diseases.

Hickman County, KY (Zone 7a) Long season
217 days
Last Spring Frost March 28
217 growing days
First Fall Frost October 31

Hickman County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (52 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: Jun 18 – Sep 3
Recommended (50%) ✓ Fits season (49 days to spare)
Start indoors: Feb 21 Transplant: Mar 28 🍅 Harvest: Jun 27 – Sep 12
Safe Start (90%) ✓ Fits season (43 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jul 15 – Sep 30

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 Hickman County

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

Soil pH

Your soil pH (5.5–6.6) overlaps with Leeks's range (6.0–7.0), though not a perfect match.

Soil Texture

The silt loam soil in Hickman County is excellent for Leeks — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Leeks.

How to Plant Leeks

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

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 4.3" 0" ❄️ Dormant
Feb 4.3" 0" ❄️ Dormant
Mar 3.5" 5.1" 0" ✅ Rainfall sufficient
Apr 3.5" 3.7" 0" ✅ Rainfall sufficient
May 3.5" 3.7" 0" ✅ Rainfall sufficient
Jun 3.5" 4.7" 0" ✅ Rainfall sufficient
Jul 3.5" 5.9" 0" ✅ Rainfall sufficient
Aug 3.5" 5.1" 0" ✅ Rainfall sufficient
Sep 3.5" 3.7" 0" ✅ Rainfall sufficient
Oct 3.5" 3.6" 0" ✅ Rainfall sufficient
Nov 4" 0" ❄️ Dormant
Dec 3.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Oct in Hickman 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 ~2,010 GDD — county provides 3,634 GDD Excellent fit

Leeks Planting Timeline — Hickman County, KY

Leeks Planting Calendar

Activity When Date Range
Start Indoors February 21 Feb 21 – Mar 7
Transplant Outdoors March 28 Mar 28 – Apr 11
Direct Sow March 14 Mar 14 – Apr 4
Harvest June 27 Jun 27 – Sep 12
Fall Sowing August 22 Aug 22 – Sep 5

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

90–150 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

217 days in Hickman County

Growing Tips for Leeks in Hickman County

Direct sow Leeks outdoors after March 28 in Hickman County when soil has warmed and frost danger has passed.

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 →

Frequently Asked Questions

When should I plant Leeks in Hickman County, KY?

Hickman County is in Zone 7a with an average last frost of March 28. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hickman County, KY?

Hickman County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is March 28 and first fall frost is October 31.

🌱

Your Hickman County Garden Planner — Free

A 24-page printable planner built for Hickman County (Zone 7a). 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 Hickman County, KY. 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.