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When to Plant Garlic in Waldo County, ME

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.

Waldo County, Maine is in USDA Zone 5a. The average last spring frost is May 8 and the first fall frost is October 6, giving you a growing season of approximately 151 days.

At an elevation of 966 feet, Waldo County receives approximately 46 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Garlic to ensure they mature before fall.

Waldo County, ME (Zone 5a) Moderate season
151 days
Last Spring Frost May 8
151 growing days
First Fall Frost October 6

Waldo County Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 3 🍅 Harvest: Aug 2 – Oct 18
Recommended (50%) ✗ May not fit
Transplant: May 8 🍅 Harvest: Aug 7 – Oct 23
Safe Start (90%) ✗ May not fit
Transplant: May 21 🍅 Harvest: Aug 20 – Nov 5

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
1.3″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Garlic needs ~2,145 GDD — county provides 1,963 GDD Tight fit

Garlic Planting Timeline โ€” Waldo County, ME

Garlic Planting Calendar

Activity When Date Range
Fall Sowing August 25 Aug 25 โ€“ Sep 8

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 Fall Sowing
September Fall Sowing
October โ€”
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 5a

Growing Season

151 days

Growing Tips for Waldo 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 Waldo County, ME?

Waldo County is in Zone 5a with an average last frost of May 8. Plan your Garlic planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Waldo County, ME?

Waldo County, Maine is in USDA Hardiness Zone 5a. The average last spring frost is May 8 and first fall frost is October 6.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Waldo County gardeners in Zone 5a 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 Waldo County, ME. Local conditions may vary. Last updated: April 2026.