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When to Plant Crosne in Otsego County, MI

Crosne (Chinese artichoke) produces small, segmented white tubers with a crunchy texture and mild artichoke-nutty flavor. They are a rare delicacy in French cuisine.

Otsego County, Michigan is in USDA Zone 4b. The average last spring frost is May 8 and the first fall frost is October 13, giving you a growing season of approximately 158 days.

At an elevation of 1,278 feet, Otsego County receives approximately 35.7 inches of rainfall annually with predominantly silt loam soil. Summer highs average 82ยฐF, so choose short-season varieties of Crosne to ensure they mature before fall.

Otsego County, MI (Zone 4b) Moderate season
158 days
Last Spring Frost May 8
158 growing days
First Fall Frost October 13

Otsego County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-7.1

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (9 days to spare)
Transplant: Apr 28 🍅 Harvest: Sep 29 – Sep 22
Recommended (50%) ✓ Fits season (11 days to spare)
Transplant: May 8 🍅 Harvest: Oct 9 – Oct 2
Safe Start (90%) ✓ Fits season (11 days to spare)
Transplant: May 31 🍅 Harvest: Nov 1 – Oct 25

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
0.4″/week
Watering frequency 1-2 times/week
Season total 494 gal / 100 sq ft
Crosne needs ~2,012 GDD — county provides 1,817 GDD Tight fit

Crosne Planting Timeline โ€” Otsego County, MI

Crosne Planting Calendar

Activity When Date Range
Direct Sow May 1 May 1 โ€“ May 22
Fall Sowing July 21 Jul 21 โ€“ Aug 4
Harvest October 2 Oct 2 โ€“ Sep 25

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

150โ€“200 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 4b

Growing Season

158 days

Growing Tips for Otsego County

Plant tubers 3 inches deep in spring. Mark the location well as plants die back. Harvest in late fall after frost. Leave some tubers in ground for next year. Very labor-intensive to harvest.

Companion Planting

Good Companions

Level Up Your Garden

Frequently Asked Questions

When should I plant Crosne in Otsego County, MI?

Otsego County is in Zone 4b with an average last frost of May 8. Plan your Crosne planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Otsego County, MI?

Otsego County, Michigan is in USDA Hardiness Zone 4b. The average last spring frost is May 8 and first fall frost is October 13.

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Plan Your Garden with Confidence

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