Blog

When to Plant Leeks in Kemper County, MS

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.

Kemper County, Mississippi is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 6, giving you a growing season of approximately 228 days.

At an elevation of 292 feet, Kemper County receives approximately 56.1 inches of rainfall annually with predominantly clay loam soil. Summer highs average 90ยฐF, providing good warmth for Leeks during the growing season. Clay soil retains moisture well for Leeks, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Leeks root diseases.

Kemper County, MS (Zone 8a) Long season
228 days
Last Spring Frost March 23
228 growing days
First Fall Frost November 6

Kemper County Soil Profile

Soil Type

Clay Loam

Soil pH

5.8-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (63 days to spare)
Start indoors: Feb 7 Transplant: Mar 14 🍅 Harvest: Jun 13 – Aug 29
Recommended (50%) ✓ Fits season (60 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: Jun 22 – Sep 7
Safe Start (90%) ✓ Fits season (54 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 Kemper County

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

Soil pH

Your soil pH (5.8โ€“6.5) overlaps with Leeks's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The clay loam soil in Kemper County is excellent for Leeks โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). 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 โ€” 5.3" 0" โ„๏ธ Dormant
Feb โ€” 5" 0" โ„๏ธ Dormant
Mar 3.5" 5.4" 0" โœ… Rainfall sufficient
Apr 3.5" 4.3" 0" โœ… Rainfall sufficient
May 3.5" 4.3" 0" โœ… Rainfall sufficient
Jun 3.5" 4.8" 0" โœ… Rainfall sufficient
Jul 3.5" 4.9" 0" โœ… Rainfall sufficient
Aug 3.5" 5.4" 0" โœ… Rainfall sufficient
Sep 3.5" 4" 0" โœ… Rainfall sufficient
Oct 3.5" 3.8" 0" โœ… Rainfall sufficient
Nov 3.5" 4.5" 0" โœ… Rainfall sufficient
Dec โ€” 4.4" 0" โ„๏ธ Dormant

Water needs are for active growing months only (Marโ€“Nov in Kemper County). Supplement amounts are based on average rainfall โ€” 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" โ€” every day above 50ยฐF 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 ~2,100 GDD — county provides 3,990 GDD Excellent fit

Leeks Planting Timeline โ€” Kemper County, MS

Leeks Planting Calendar

Activity When Date Range
Start Indoors February 16 Feb 16 โ€“ Mar 2
Transplant Outdoors March 23 Mar 23 โ€“ Apr 6
Direct Sow March 9 Mar 9 โ€“ Mar 30
Harvest June 22 Jun 22 โ€“ Sep 7
Fall Sowing August 28 Aug 28 โ€“ Sep 11

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

Month-by-Month Timeline

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

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.8"/week ยท Natural rainfall sufficient

๐Ÿ“… Days to Maturity

90โ€“150 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 8a

๐Ÿ“† Growing Season

228 days in Kemper County

Growing Tips for Leeks in Kemper County

Direct sow Leeks outdoors after March 23 in Kemper County when soil has warmed and frost danger has passed.

With Kemper County's clay soil (34% clay), work in 3-4 inches of compost before planting Leeks. Avoid tilling when soil is wet to prevent compaction.

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 Kemper County, MS?

Kemper County is in Zone 8a with an average last frost of March 23. Plan your Leeks planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Kemper County, MS?

Kemper County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Kemper County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.

Get Your Free Garden Planner →

Free download. Plan your entire garden season in minutes.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Kemper County, MS. Local conditions may vary. Last updated: April 2026.