When to plant Garlic in Gallatin County, IL
For Gallatin County, gardeners: plant Garlic mid-spring through late spring once soil reads 50°F. A second sowing from September 18 to October 2 extends the harvest into fall.
When to Plant Garlic in Gallatin County, IL
Garlic is a pungent allium planted in fall and harvested the following summer. Hardneck varieties produce edible flower stalks (scapes) and are more cold-hardy.
Gallatin County, Illinois is in USDA Zone 7a. The average last spring frost is April 6 and the first fall frost is October 30, giving you a growing season of approximately 207 days.
At an elevation of 1,391 feet, Gallatin County receives approximately 37 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Garlic during the growing season.
Gallatin County Soil Profile
Soil Type
Silt Loam
Soil pH
6.0-7.0
Drainage
Well Drained
Garlic Planting Timeline — Gallatin County, IL
Garlic Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Harvest | December 18 | Dec 18 – Apr 30 |
| Fall Sowing | September 18 | Sep 18 – Oct 2 |
Plant 1" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Harvest |
| February | Harvest |
| March | Harvest |
| April | Harvest |
| May | — |
| June | — |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | Harvest |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
Moderate — regular watering
📅 Days to Maturity
90–240 days
🧪 Soil pH
Needs 6–7.5 · Your soil: N/A
🗺️ USDA Zone
Zone 7a
📆 Growing Season
207 days in Gallatin County
Growing Tips for Gallatin County
Plant individual cloves pointed end up in fall, 6 weeks before ground freezes. Mulch heavily with straw. Harvest when lower leaves begin to brown but 5-6 green leaves remain.
Companion Planting
Good Companions
Avoid Planting Near
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Garlic in Other Locations
Frequently Asked Questions
When should I plant Garlic in Gallatin County, IL?
Gallatin County is in Zone 7a with an average last frost of April 6. Plan your Garlic planting based on this frost date — see the calendar above for exact timing.
What planting zone is Gallatin County, IL?
Gallatin County, Illinois is in USDA Hardiness Zone 7a. The average last spring frost is April 6 and first fall frost is October 30.
When should I plant Garlic in Gallatin County, IL?
In Gallatin County, IL, plant Garlic after the last frost (around April 6) and before the first frost (around October 30). Best results when soil holds above 50°F.
What growing zone is Gallatin County, IL for Garlic?
Gallatin County sits in USDA Zone 7a. Garlic grows reliably in zones 3a through 9b, so it's a good fit here.
Can Garlic grow in Gallatin County's climate?
Yes — Garlic grows well in Gallatin County's temperate climate. Gallatin County averages a 207-day frost-free season, with last frost around April 6 and first frost around October 30.
Your Gallatin County Garden Planner — Free
A 22-page printable planner built for Gallatin 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.