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When to Plant Ground Cherry in Mackinac County, MI

Ground cherries produce small, sweet, tropical-tasting berries enclosed in papery husks. They are related to tomatillos and cape gooseberries and self-sow readily.

Mackinac County, Michigan is in USDA Zone 4b. The average last spring frost is May 12 and the first fall frost is October 10, giving you a growing season of approximately 151 days.

At an elevation of 1,335 feet, Mackinac County receives approximately 35.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 80ยฐF, so choose short-season varieties of Ground Cherry to ensure they mature before fall.

Mackinac County, MI (Zone 4b) Moderate season
151 days
Last Spring Frost May 12
151 growing days
First Fall Frost October 10

Mackinac County Soil Profile

Soil Type

Silt Loam

Soil pH

6.2-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Jun 2 🍅 Harvest: Aug 11 – Oct 6
Recommended (50%) ✗ May not fit
Transplant: Jun 9 🍅 Harvest: Aug 18 – Oct 13
Safe Start (90%) ✗ May not fit
Transplant: Jun 24 🍅 Harvest: Sep 2 – Oct 28

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
1.0″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 32 gal / 100 sq ft
Ground Cherry needs ~725 GDD — county provides 1,510 GDD Excellent fit

Ground Cherry Planting Timeline โ€” Mackinac County, MI

Ground Cherry Planting Calendar

Activity When Date Range
Transplant Outdoors June 9 Jun 9 โ€“ Jun 23
Harvest August 18 Aug 18 โ€“ Oct 13

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May โ€”
June Transplant Outdoors
July โ€”
August Harvest
September Harvest
October Harvest
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

65โ€“80 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 4b

Growing Season

151 days

Growing Tips for Mackinac County

Start seeds indoors 6-8 weeks before last frost. Let fruits fall to the ground naturally when ripe inside their husks. The husk turns brown and papery when the fruit is ready.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Level Up Your Garden

Frequently Asked Questions

When should I plant Ground Cherry in Mackinac County, MI?

Mackinac County is in Zone 4b with an average last frost of May 12. Plan your Ground Cherry planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Mackinac County, MI?

Mackinac County, Michigan is in USDA Hardiness Zone 4b. The average last spring frost is May 12 and first fall frost is October 10.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Mackinac County gardeners in Zone 4b 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 Mackinac County, MI. Local conditions may vary. Last updated: April 2026.