Blog

When to plant Leeks in LaGrange County, IN

LaGrange County's spring Leeks window runs April 14 through May 5. time plantings around the expected last-frost window for best survival. A second sowing from August 7 to August 21 extends the harvest into fall.

When to Plant Leeks in LaGrange County, IN

Leeks

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.

LaGrange County, Indiana is in USDA Zone 6a. The average last spring frost is April 28 and the first fall frost is October 16, giving you a growing season of approximately 171 days.

At an elevation of 651 feet, LaGrange County receives approximately 41.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Leeks during the growing season.

LaGrange County, IN (Zone 6a) Moderate season
171 days
Last Spring Frost April 28
171 growing days
First Fall Frost October 16

LaGrange County Soil Profile

Soil Type

Silt Loam

Soil pH

5.9-7.1

Drainage

Well Drained

Monthly Watering Guide for Leeks

Leeks needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Leeks Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.8" 0" ❄️ Dormant
Apr 4.3" 4.4" 0" ✅ Rainfall sufficient
May 4.3" 5.2" 0" ✅ Rainfall sufficient
Jun 4.3" 4.9" 0" ✅ Rainfall sufficient
Jul 4.3" 5.1" 0" ✅ Rainfall sufficient
Aug 4.3" 4.3" 0" ✅ Rainfall sufficient
Sep 4.3" 3.3" 1" 💧 Light watering
Oct 4.3" 3" 1.3" 💧 Light watering
Nov 2.8" 0" ❄️ Dormant
Dec 2.2" 0" ❄️ Dormant

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

Leeks Planting Timeline — LaGrange County, IN

Leeks Planting Calendar

Activity When Date Range
Start Indoors March 24 Mar 24 – Apr 7
Transplant Outdoors April 28 Apr 28 – May 12
Direct Sow April 14 Apr 14 – May 5
Harvest July 28 Jul 28 – Oct 13
Fall Sowing August 7 Aug 7 – Aug 21

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

90–150 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6a

📆 Growing Season

171 days in LaGrange County

Growing Tips for LaGrange County

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 LaGrange County, IN?

LaGrange County is in Zone 6a with an average last frost of April 28. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.

What planting zone is LaGrange County, IN?

LaGrange County, Indiana is in USDA Hardiness Zone 6a. The average last spring frost is April 28 and first fall frost is October 16.

When should I plant Leeks in LaGrange County, IN?

In LaGrange County, IN, plant Leeks after the last frost (around April 28) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is LaGrange County, IN for Leeks?

LaGrange County sits in USDA Zone 6a. Leeks grows reliably in zones 3a through 10b, so it's a good fit here.

Can Leeks grow in LaGrange County's climate?

Yes — Leeks grows well in LaGrange County's temperate climate. LaGrange County averages a 171-day frost-free season, with last frost around April 28 and first frost around October 16.

🌱

Your LaGrange County Garden Planner — Free

A 22-page printable planner built for LaGrange County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

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

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.