When to Plant Scallions in Tuscola 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.
Tuscola County, Michigan is in USDA Zone 5b. The average last spring frost is May 3 and the first fall frost is October 16, giving you a growing season of approximately 166 days.
At an elevation of 1,369 feet, Tuscola County receives approximately 30.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Scallions during the growing season.
Tuscola County Soil Profile
Soil Type
Silt Loam
Soil pH
6.1-6.8
Drainage
Well Drained
Plant Planting Risk Windows
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
Scallions Planting Timeline — Tuscola County, MI
Scallions Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 29 | Mar 29 – Apr 12 |
| Transplant Outdoors | May 3 | May 3 – May 17 |
| Direct Sow | April 19 | Apr 19 – May 10 |
| Fall Sowing | August 7 | Aug 7 – Aug 21 |
| Harvest | June 28 | Jun 28 – Jul 26 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Start Indoors Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Fall Sowing |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
50–70 days
Soil pH
6 – 7
USDA Zone
Zone 5b
Growing Season
166 days
Growing Tips for Tuscola 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
Level Up Your Garden
Scallions in Other Locations
Frequently Asked Questions
When should I plant Scallions in Tuscola County, MI?
Tuscola County is in Zone 5b with an average last frost of May 3. Plan your Scallions planting based on this frost date — see the calendar above for exact timing.
What planting zone is Tuscola County, MI?
Tuscola County, Michigan is in USDA Hardiness Zone 5b. The average last spring frost is May 3 and first fall frost is October 16.
Plan Your Garden with Confidence
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