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When to Plant Scallions in Wexford County, MI

Scallions (green onions) are mild-flavored alliums harvested for their slender green tops and white bases. They are quick-growing and perfect for succession planting.

Wexford County, Michigan is in USDA Zone 5a. The average last spring frost is May 17 and the first fall frost is October 4, giving you a growing season of approximately 140 days.

At an elevation of 1,167 feet, Wexford County receives approximately 35.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Scallions to ensure they mature before fall.

Wexford County, MI (Zone 5a) Short season
140 days
Last Spring Frost May 17
140 growing days
First Fall Frost October 4

Wexford County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (57 days to spare)
Start indoors: Apr 7 Transplant: May 12 🍅 Harvest: Jul 7 – Aug 4
Recommended (50%) ✓ Fits season (56 days to spare)
Start indoors: Apr 12 Transplant: May 17 🍅 Harvest: Jul 12 – Aug 9
Safe Start (90%) ✓ Fits season (62 days to spare)
Start indoors: Apr 25 Transplant: May 30 🍅 Harvest: Jul 25 – Aug 22

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
1.1″/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

Scallions needs ~780 GDD — county provides 1,820 GDD Excellent fit

Scallions Planting Timeline โ€” Wexford County, MI

Scallions Planting Calendar

Activity When Date Range
Start Indoors April 12 Apr 12 โ€“ Apr 26
Transplant Outdoors May 17 May 17 โ€“ May 31
Direct Sow May 3 May 3 โ€“ May 24
Fall Sowing July 26 Jul 26 โ€“ Aug 9
Harvest July 12 Jul 12 โ€“ Aug 9

Plant 0.5" deep ยท 6" apart ยท Rows 12" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Start Indoors
May Transplant Outdoors Direct Sow
June โ€”
July Fall Sowing Harvest
August Fall Sowing Harvest
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

50โ€“70 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 5a

Growing Season

140 days

Growing Tips for Wexford County

Direct sow every 3 weeks for continuous harvest. Thin to 1 inch apart or grow in clusters. Harvest when pencil-thick by pulling or cutting at soil level.

Companion Planting

Good Companions

Avoid Planting Near

  • Peas
  • Green Beans

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Frequently Asked Questions

When should I plant Scallions in Wexford County, MI?

Wexford County is in Zone 5a with an average last frost of May 17. Plan your Scallions planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Wexford County, MI?

Wexford County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 17 and first fall frost is October 4.

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Plan Your Garden with Confidence

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