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When to plant Microgreens in Bay County, MI

Bay County gardeners should plant Microgreens between April 26 and May 17 in spring. With Bay County's Zone 6a climate (last frost May 10), Microgreens needs 7–21 days to mature — plant by September 16 for a full harvest. A second sowing from July 29 to August 12 extends the harvest into fall.

When to Plant Microgreens in Bay County, MI

Microgreens are young seedlings of vegetables and herbs harvested at the cotyledon or first true leaf stage. They pack concentrated flavors and nutrients in a tiny package.

Bay County, Michigan is in USDA Zone 6a. The average last spring frost is May 10 and the first fall frost is October 7, giving you a growing season of approximately 150 days.

At an elevation of 835 feet, Bay County receives approximately 33 inches of rainfall annually with predominantly silt loam soil. Summer highs average 87°F, providing good warmth for Microgreens during the growing season.

Bay County, MI (Zone 6a) Moderate season
150 days
Last Spring Frost May 10
150 growing days
First Fall Frost October 7

Bay County Soil Profile

Soil Type

Silt Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Microgreens Planting Timeline — Bay County, MI

Microgreens Planting Calendar

Activity When Date Range
Start Indoors April 5 Apr 5 – Apr 19
Transplant Outdoors May 10 May 10 – May 24
Direct Sow April 26 Apr 26 – May 17
Harvest May 17 May 17 – Jun 14
Fall Sowing July 29 Jul 29 – Aug 12

Plant 0.5" deep · 2" apart · Rows 6" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

7–21 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6a

📆 Growing Season

150 days in Bay County

Growing Tips for Bay County

Sow seeds densely on shallow trays of moist growing medium. Cover until germination, then provide light. Harvest with scissors when 1-3 inches tall. Grow year-round indoors.

Frequently Asked Questions

When should I plant Microgreens in Bay County, MI?

Bay County is in Zone 6a with an average last frost of May 10. Plan your Microgreens planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bay County, MI?

Bay County, Michigan is in USDA Hardiness Zone 6a. The average last spring frost is May 10 and first fall frost is October 7.

When should I plant Microgreens in Bay County, MI?

In Bay County, MI, plant Microgreens after the last frost (around May 10) and before the first frost (around October 7). Best results when soil holds above 50°F.

What growing zone is Bay County, MI for Microgreens?

Bay County sits in USDA Zone 6a. Microgreens grows reliably in zones 1a through 13b, so it's a good fit here.

Can Microgreens grow in Bay County's climate?

Yes — Microgreens grows well in Bay County's temperate climate. Bay County averages a 150-day frost-free season, with last frost around May 10 and first frost around October 7.

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Your Bay County Garden Planner — Free

A 22-page printable planner built for Bay County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Bay County, MI. Local conditions may vary. Last updated: June 2026.

Sources & credits

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