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When to plant Crosne in Colbert County, AL

Aim to plant Crosne in Colbert County on or after March 23; the window stays open through April 13. Colbert County's 205-day frost-free season gives you enough for a full main crop and a short fall succession. A second sowing from August 19 to September 2 extends the harvest into fall.

When to Plant Crosne in Colbert County, AL

Colbert County, Alabama Zone 8a July

Your July game plan for Colbert County, Alabama

Welcome to July in Zone 8a. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 6
Avg. first frost October 28
Soil temp (4") 85°F
Watering Low
Pest pressure High
Daylight 14.1 hrs
A few tasks this July that'll pay off in August
  • First harvests: crosne
  • Fall sowing: crosne

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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.

Colbert County, Alabama is in USDA Zone 8a. The average last spring frost is April 6 and the first fall frost is October 28, giving you a growing season of approximately 205 days.

At an elevation of 380 feet, Colbert County receives approximately 50.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 89°F, 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.

Colbert County, AL (Zone 8a) Long season
205 days
Last Spring Frost April 6
205 growing days
First Fall Frost October 28

Colbert County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.2

Drainage

Well Drained

Crosne Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: Mar 28 🍅 Harvest: Aug 29 – Oct 31
Recommended (50%) ✗ May not fit
Transplant: Apr 6 🍅 Harvest: Sep 7 – Nov 9
Safe Start (90%) ✗ May not fit
Transplant: Apr 18 🍅 Harvest: Sep 19 – Nov 21

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.

Soil Compatibility in Colbert County

How your county's soil matches Crosne's growing requirements.

Soil pH

Your soil pH (5.5–6.2) is more acidic than Crosne prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Colbert County is excellent for Crosne — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Crosne.

How to Plant Crosne

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Crosne Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Crosne

Crosne needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Crosne Needs Rainfall You Supplement Action
Jan 4.2" 0" ❄️ Dormant
Feb 4.6" 0" ❄️ Dormant
Mar 4.8" 0" ❄️ Dormant
Apr 4.3" 3.6" 0.7" 💧 Light watering
May 4.3" 3.5" 0.8" 💧 Light watering
Jun 4.3" 5.1" 0" ✅ Rainfall sufficient
Jul 4.3" 5.1" 0" ✅ Rainfall sufficient
Aug 4.3" 4.4" 0" ✅ Rainfall sufficient
Sep 4.3" 3.6" 0.7" 💧 Light watering
Oct 4.3" 3.7" 0.6" 💧 Light watering
Nov 4.2" 0" ❄️ Dormant
Dec 4.2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Colbert County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Crosne Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Crosne needs ~2,931 GDD — county provides 3,433 GDD Good fit

Crosne Planting Timeline — Colbert County, AL

Crosne Planting Calendar

Activity When Date Range
Direct Sow March 23 Mar 23 – Apr 13
Harvest August 24 Aug 24 – Oct 26
Fall Sowing August 19 Aug 19 – Sep 2

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

150–200 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8a

📆 Growing Season

205 days in Colbert County

Growing Tips for Crosne in Colbert County

Direct sow Crosne outdoors after April 06 in Colbert County when soil has warmed and frost danger has passed.

With Colbert County's clay soil (34% clay), work in 3-4 inches of compost before planting Crosne. Avoid tilling when soil is wet to prevent compaction.

Your 205.0-day growing season in Colbert County is tight for Crosne (150.0-200.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Crosne in Colbert County, AL?

Colbert County is in Zone 8a with an average last frost of April 6. Plan your Crosne planting based on this frost date — see the calendar above for exact timing.

What planting zone is Colbert County, AL?

Colbert County, Alabama is in USDA Hardiness Zone 8a. The average last spring frost is April 6 and first fall frost is October 28.

When should I plant Crosne in Colbert County, AL?

In Colbert County, AL, plant Crosne after the last frost (around April 6) and before the first frost (around October 28). Best results when soil holds above 50°F.

What growing zone is Colbert County, AL for Crosne?

Colbert County sits in USDA Zone 8a. Crosne grows reliably in zones 4a through 9b, so it's a good fit here.

Can Crosne grow in Colbert County's climate?

Yes — Crosne grows well in Colbert County's temperate climate. Colbert County averages a 205-day frost-free season, with last frost around April 6 and first frost around October 28.

🌱

Your Colbert County Garden Planner — Free

A 22-page printable planner built for Colbert County (Zone 8a). 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 Colbert County, AL. Local conditions may vary. Last updated: July 2026.

Sources & credits

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