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When to plant Cardoon in Carroll County, AR

Plant Cardoon in Carroll County during the brief April 28–May 12 window. With 194 frost-free days, fall plantings can't mature before October 25.

When to Plant Cardoon in Carroll County, AR

Carroll County, Arkansas Zone 7a June

Carroll County, Arkansas gardeners: here's your June plan

Each item below is timed to Carroll County, Arkansas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 14
Avg. first frost October 25
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 14.5 hrs

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Cardoon is a large thistle relative of the artichoke, grown for its edible leaf stalks. It has dramatic silvery foliage and makes a striking ornamental as well.

Carroll County, Arkansas is in USDA Zone 7a. The average last spring frost is April 14 and the first fall frost is October 25, giving you a growing season of approximately 194 days.

At an elevation of 1,166 feet, Carroll County receives approximately 53.4 inches of rainfall annually with predominantly silt loam soil. Summer highs average 88°F, providing good warmth for Cardoon during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cardoon root diseases.

Carroll County, AR (Zone 7a) Moderate season
194 days
Last Spring Frost April 14
194 growing days
First Fall Frost October 25

Carroll County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.8

Drainage

Well Drained

Cardoon Planting Risk Windows

Early Start (70% safe) ✓ Fits season (13 days to spare)
Transplant: Apr 19 🍅 Harvest: Aug 23 – Oct 4
Recommended (50%) ✓ Fits season (12 days to spare)
Transplant: Apr 28 🍅 Harvest: Sep 1 – Oct 13
Safe Start (90%) ✓ Fits season (14 days to spare)
Transplant: May 11 🍅 Harvest: Sep 14 – Oct 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.

Soil Compatibility in Carroll County

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

Soil pH

Your soil pH (5.5–6.8) overlaps with Cardoon's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Carroll County is excellent for Cardoon — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.2%). Annual compost additions will help Cardoon.

How to Plant Cardoon

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Cardoon Water Budget

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

Monthly Watering Guide for Cardoon

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

Month Cardoon Needs Rainfall You Supplement Action
Jan 4.3" 0" ❄️ Dormant
Feb 4.2" 0" ❄️ Dormant
Mar 5" 0" ❄️ Dormant
Apr 4.3" 3.4" 0.9" 💧 Light watering
May 4.3" 4.6" 0" ✅ Rainfall sufficient
Jun 4.3" 4.8" 0" ✅ Rainfall sufficient
Jul 4.3" 5.5" 0" ✅ Rainfall sufficient
Aug 4.3" 5.7" 0" ✅ Rainfall sufficient
Sep 4.3" 4.6" 0" ✅ Rainfall sufficient
Oct 4.3" 3.2" 1.1" 💧 Light watering
Nov 3.9" 0" ❄️ Dormant
Dec 4.1" 0" ❄️ Dormant

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

Cardoon 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.

Cardoon needs ~2,160 GDD — county provides 3,104 GDD Excellent fit

Cardoon Planting Timeline — Carroll County, AR

Cardoon Planting Calendar

Activity When Date Range
Transplant Outdoors April 28 Apr 28 – May 12
Harvest September 1 Sep 1 – Oct 13

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

120–150 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

194 days in Carroll County

Growing Tips for Cardoon in Carroll County

Direct sow Cardoon outdoors after April 14 in Carroll County when soil has warmed and frost danger has passed.

Common pests for Cardoon in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.

General growing tips

Blanch stalks by wrapping with cardboard or tying leaves together 3-4 weeks before harvest. Provide deep, rich soil and consistent moisture. Protect from hard frost.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cardoon in Carroll County, AR?

Carroll County is in Zone 7a with an average last frost of April 14. Plan your Cardoon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Carroll County, AR?

Carroll County, Arkansas is in USDA Hardiness Zone 7a. The average last spring frost is April 14 and first fall frost is October 25.

When should I plant Cardoon in Carroll County, AR?

In Carroll County, AR, plant Cardoon after the last frost (around April 14) and before the first frost (around October 25). Best results when soil holds above 50°F.

What growing zone is Carroll County, AR for Cardoon?

Carroll County sits in USDA Zone 7a. Cardoon grows reliably in zones 7a through 10b, so it's a good fit here.

Can Cardoon grow in Carroll County's climate?

Yes — Cardoon grows well in Carroll County's temperate climate. Carroll County averages a 194-day frost-free season, with last frost around April 14 and first frost around October 25.

🌱

Your Carroll County Garden Planner — Free

A 22-page printable planner built for Carroll County (Zone 7a). 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 Carroll County, AR. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.