When to plant Leeks in Schuyler County, IL
In Schuyler County, plant Leeks in spring between April 2 and April 23, once soil temps hold above 50°F. Schuyler County's last frost averages April 16, so time plantings around the expected last-frost window for best survival. For a fall crop, sow between August 11 and August 25 — roughly 90–150 days before the first frost on October 20.
When to Plant Leeks in Schuyler County, IL
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.
Schuyler County, Illinois is in USDA Zone 6a. The average last spring frost is April 16 and the first fall frost is October 20, giving you a growing season of approximately 187 days.
At an elevation of 1,174 feet, Schuyler County receives approximately 41.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Leeks during the growing season.
Schuyler County Soil Profile
Soil Type
Silt Loam
Soil pH
5.9-6.8
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 | — | 1.8" | 0" | ❄️ Dormant |
| Mar | — | 3.1" | 0" | ❄️ Dormant |
| Apr | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| May | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.7" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Sep | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Oct | 4.3" | 3.5" | 0.8" | 💧 Light watering |
| Nov | — | 2.9" | 0" | ❄️ Dormant |
| Dec | — | 2.2" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Schuyler County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Leeks Planting Timeline — Schuyler County, IL
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 12 | Mar 12 – Mar 26 |
| Transplant Outdoors | April 16 | Apr 16 – Apr 30 |
| Direct Sow | April 2 | Apr 2 – Apr 23 |
| Harvest | July 16 | Jul 16 – Oct 1 |
| Fall Sowing | August 11 | Aug 11 – Aug 25 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Transplant Outdoors Direct Sow |
| May | — |
| 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
187 days in Schuyler County
Growing Tips for Schuyler 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
Check more plant combinations with our Companion Planting Checker →
Leeks in Other Locations
Frequently Asked Questions
When should I plant Leeks in Schuyler County, IL?
Schuyler County is in Zone 6a with an average last frost of April 16. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Schuyler County, IL?
Schuyler County, Illinois is in USDA Hardiness Zone 6a. The average last spring frost is April 16 and first fall frost is October 20.
When should I plant Leeks in Schuyler County, IL?
In Schuyler County, IL, plant Leeks after the last frost (around April 16) and before the first frost (around October 20). Best results when soil holds above 50°F.
What growing zone is Schuyler County, IL for Leeks?
Schuyler 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 Schuyler County's climate?
Yes — Leeks grows well in Schuyler County's temperate climate. Schuyler County averages a 187-day frost-free season, with last frost around April 16 and first frost around October 20.
Your Schuyler County Garden Planner — Free
A 22-page printable planner built for Schuyler 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.