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When to Plant Garlic in Calloway County, KY

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.

Calloway County, Kentucky is in USDA Zone 7a. The average last spring frost is April 5 and the first fall frost is October 29, giving you a growing season of approximately 207 days.

At an elevation of 2,755 feet, Calloway County receives approximately 42 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93ยฐF, providing good warmth for Garlic during the growing season.

Calloway County, KY (Zone 7a) Long season
207 days
Last Spring Frost April 5
207 growing days
First Fall Frost October 29

Calloway County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 30 🍅 Harvest: Jun 29 – Nov 9
Recommended (50%) ✗ May not fit
Transplant: Apr 5 🍅 Harvest: Jul 5 – Nov 15
Safe Start (90%) ✗ May not fit
Transplant: Apr 17 🍅 Harvest: Jul 17 – Nov 27

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Garlic needs ~3,259 GDD — county provides 4,088 GDD Good fit

Garlic Planting Timeline โ€” Calloway County, KY

Garlic Planting Calendar

Activity When Date Range
Fall Sowing September 17 Sep 17 โ€“ Oct 1

Plant 1" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May โ€”
June โ€”
July โ€”
August โ€”
September Fall Sowing
October Fall Sowing
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

90โ€“240 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 7a

Growing Season

207 days

Growing Tips for Calloway 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

  • Peas
  • Green Beans
  • Asparagus

Level Up Your Garden

Frequently Asked Questions

When should I plant Garlic in Calloway County, KY?

Calloway County is in Zone 7a with an average last frost of April 5. Plan your Garlic planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Calloway County, KY?

Calloway County, Kentucky is in USDA Hardiness Zone 7a. The average last spring frost is April 5 and first fall frost is October 29.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Calloway County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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