When to plant Leeks in Geary County, KS
In Geary County, plant Leeks in spring between April 1 and April 22, once soil temps hold above 50°F. Geary County's last frost averages April 15, 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 Geary County, KS
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.
Geary County, Kansas is in USDA Zone 6b. The average last spring frost is April 15 and the first fall frost is October 20, giving you a growing season of approximately 188 days.
At an elevation of 610 feet, Geary County receives approximately 31.2 inches of rainfall annually with predominantly loam soil. Summer highs average 88°F, providing good warmth for Leeks during the growing season.
Geary County Soil Profile
Soil Type
Loam
Soil pH
6.4-7.8
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 | — | 0.8" | 0" | ❄️ Dormant |
| Feb | — | 1.1" | 0" | ❄️ Dormant |
| Mar | — | 1.8" | 0" | ❄️ Dormant |
| Apr | 4.3" | 3.3" | 1" | 💧 Light watering |
| May | 4.3" | 4.9" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 4.5" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Aug | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Sep | 4.3" | 3.2" | 1.1" | 💧 Light watering |
| Oct | 4.3" | 1.9" | 2.4" | 🚿 Regular watering |
| Nov | — | 1.2" | 0" | ❄️ Dormant |
| Dec | — | 0.7" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Geary County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Leeks Planting Timeline — Geary County, KS
Leeks Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 11 | Mar 11 – Mar 25 |
| Transplant Outdoors | April 15 | Apr 15 – Apr 29 |
| Direct Sow | April 1 | Apr 1 – Apr 22 |
| Harvest | July 15 | Jul 15 – Sep 30 |
| 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 | — |
| 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 6b
📆 Growing Season
188 days in Geary County
Growing Tips for Geary 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 Geary County, KS?
Geary County is in Zone 6b with an average last frost of April 15. Plan your Leeks planting based on this frost date — see the calendar above for exact timing.
What planting zone is Geary County, KS?
Geary County, Kansas is in USDA Hardiness Zone 6b. The average last spring frost is April 15 and first fall frost is October 20.
When should I plant Leeks in Geary County, KS?
In Geary County, KS, plant Leeks after the last frost (around April 15) and before the first frost (around October 20). Best results when soil holds above 50°F.
What growing zone is Geary County, KS for Leeks?
Geary County sits in USDA Zone 6b. Leeks grows reliably in zones 3a through 10b, so it's a good fit here.
Can Leeks grow in Geary County's climate?
Yes — Leeks grows well in Geary County's temperate climate. Geary County averages a 188-day frost-free season, with last frost around April 15 and first frost around October 20.
Your Geary County Garden Planner — Free
A 22-page printable planner built for Geary County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.