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When to plant Cardoon in Compton, AR

Plant Cardoon in Compton, between April 27 and May 11 — the only viable window. Zone 7b's short season (192 frost-free days) rules out a fall crop.

When to Plant Cardoon in Compton, AR

Newton County, Arkansas Zone 7b July

Your July planting checklist for Newton County, Arkansas

Your garden in Newton County, Arkansas is working on a schedule, even when you're not. Here's where you should be this July.

Avg. last frost April 13
Avg. first frost October 22
Soil temp (4") 80°F
Watering Low
Pest pressure High
Daylight 14.2 hrs
Coming up in August — start thinking about
  • First harvests: cardoon

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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.

Compton, Arkansas is in USDA Zone 7b. The average last spring frost is April 13 and the first fall frost is October 22, giving you a growing season of approximately 192 days.

At an elevation of 881 feet, Newton County receives approximately 48.6 inches of rainfall annually with predominantly silt loam soil. Summer highs average 86°F, providing good warmth for Cardoon during the growing season.

Compton, AR (Zone 7b) Moderate season
192 days
Last Spring Frost April 13
192 growing days
First Fall Frost October 22

Compton Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.8

Drainage

Well Drained

Cardoon Planting Risk Windows

Early Start (70% safe) ✓ Fits season (14 days to spare)
Transplant: Apr 18 🍅 Harvest: Aug 22 – Oct 3
Recommended (50%) ✓ Fits season (10 days to spare)
Transplant: Apr 27 🍅 Harvest: Aug 31 – Oct 12
Safe Start (90%) ✓ Fits season (16 days to spare)
Transplant: May 7 🍅 Harvest: Sep 10 – Oct 22

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 Compton

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

Soil pH

Your soil pH (5.7–6.8) overlaps with Cardoon's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.9%). 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
1.1″/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 4.5" 0" ❄️ Dormant
Feb 4.1" 0" ❄️ Dormant
Mar 4.5" 0" ❄️ Dormant
Apr 4.3" 3.9" 0.4" 💧 Light watering
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 3.8" 0.5" 💧 Light watering
Jul 4.3" 4.4" 0" ✅ Rainfall sufficient
Aug 4.3" 4.1" 0.2" 💧 Light watering
Sep 4.3" 3.4" 0.9" 💧 Light watering
Oct 4.3" 3.5" 0.8" 💧 Light watering
Nov 3.6" 0" ❄️ Dormant
Dec 4.2" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Newton 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 ~1,958 GDD — county provides 2,784 GDD Excellent fit

Cardoon Planting Timeline — Compton, AR

Cardoon Planting Calendar

Activity When Date Range
Transplant Outdoors April 27 Apr 27 – May 11
Harvest August 31 Aug 31 – Oct 12

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 Harvest
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 7b

📆 Growing Season

192 days in Newton County

Growing Tips for Cardoon in Compton

Direct sow Cardoon outdoors after April 13 in Newton 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 →

When should I plant Cardoon in Compton, AR?

In Compton, AR, plant Cardoon after the last frost (around April 13) and before the first frost (around October 22). Best results when soil holds above 50°F.

What growing zone is Compton, AR for Cardoon?

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

Can Cardoon grow in Compton's climate?

Yes — Cardoon grows well in Compton's temperate climate. Compton averages a 192-day frost-free season, with last frost around April 13 and first frost around October 22.

🌱

Your Newton County Garden Planner — Free

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