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When to Plant Crosne in Limestone County, AL

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.

Limestone County, Alabama is in USDA Zone 7a. The average last spring frost is April 5 and the first fall frost is October 29, giving you a growing season of approximately 207 days.

At an elevation of 200 feet, Limestone County receives approximately 54.7 inches of rainfall annually with predominantly clay loam soil. Summer highs average 93ยฐF, providing good warmth for Crosne during the growing season. Clay soil retains moisture well for Crosne, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Crosne root diseases.

Limestone County, AL (Zone 7a) Long season
207 days
Last Spring Frost April 5
207 growing days
First Fall Frost October 29

Limestone County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 23 🍅 Harvest: Aug 24 – Oct 26
Recommended (50%) ✗ May not fit
Transplant: Apr 5 🍅 Harvest: Sep 6 – Nov 8
Safe Start (90%) ✗ May not fit
Transplant: Apr 23 🍅 Harvest: Sep 24 – Nov 26

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
Crosne needs ~3,456 GDD — county provides 4,088 GDD Good fit

Crosne Planting Timeline โ€” Limestone County, AL

Crosne Planting Calendar

Activity When Date Range
Direct Sow March 22 Mar 22 โ€“ Apr 12
Fall Sowing August 20 Aug 20 โ€“ Sep 3
Harvest August 23 Aug 23 โ€“ Oct 25

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

Month-by-Month Timeline

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

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 7a

Growing Season

207 days

Growing Tips for Limestone 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 Limestone County, AL?

Limestone County is in Zone 7a with an average last frost of April 5. Plan your Crosne planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Limestone County, AL?

Limestone County, Alabama is in USDA Hardiness Zone 7a. The average last spring frost is April 5 and first fall frost is October 29.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Limestone County gardeners in Zone 7a 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 Limestone County, AL. Local conditions may vary. Last updated: April 2026.