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When to Plant Garlic in Fairfield County, CT

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.

Fairfield County, Connecticut is in USDA Zone 7a. The average last spring frost is April 9 and the first fall frost is November 3, giving you a growing season of approximately 208 days.

At an elevation of 617 feet, Fairfield County receives approximately 41 inches of rainfall annually with predominantly silt loam soil. Summer highs average 91ยฐF, providing good warmth for Garlic during the growing season.

Fairfield County, CT (Zone 7a) Long season
208 days
Last Spring Frost April 9
208 growing days
First Fall Frost November 3

Fairfield County Soil Profile

Soil Type

Silt Loam

Soil pH

5.1-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 31 🍅 Harvest: Jun 30 – Nov 10
Recommended (50%) ✗ May not fit
Transplant: Apr 9 🍅 Harvest: Jul 9 – Nov 19
Safe Start (90%) ✗ May not fit
Transplant: Apr 29 🍅 Harvest: Jul 29 – Dec 9

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
0.8″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Garlic needs ~3,011 GDD — county provides 3,796 GDD Good fit

Garlic Planting Timeline โ€” Fairfield County, CT

Garlic Planting Calendar

Activity When Date Range
Fall Sowing September 22 Sep 22 โ€“ Oct 6

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

208 days

Growing Tips for Fairfield 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 Fairfield County, CT?

Fairfield County is in Zone 7a with an average last frost of April 9. Plan your Garlic planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Fairfield County, CT?

Fairfield County, Connecticut is in USDA Hardiness Zone 7a. The average last spring frost is April 9 and first fall frost is November 3.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Fairfield 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 Fairfield County, CT. Local conditions may vary. Last updated: April 2026.