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When to plant Cardoon in Phillips County, AR

Phillips County's 243-day season only supports one Cardoon planting per year. Sow between March 28 and April 11 for the best chance at full maturity before November 12.

When to Plant Cardoon in Phillips County, AR

Phillips County, Arkansas Zone 8a July

July to-do list for Phillips County, Arkansas

July rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Phillips County, Arkansas.

Avg. last frost March 14
Avg. first frost November 12
Soil temp (4") 86°F
Watering Low
Pest pressure High
Daylight 14.1 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.

Phillips County, Arkansas is in USDA Zone 8a. The average last spring frost is March 14 and the first fall frost is November 12, giving you a growing season of approximately 243 days.

At an elevation of 678 feet, Phillips County receives approximately 50 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Cardoon during the growing season.

Phillips County, AR (Zone 8a) Long season
243 days
Last Spring Frost March 14
243 growing days
First Fall Frost November 12

Phillips County Soil Profile

Soil Type

Silt Loam

Soil pH

5.6-6.7

Drainage

Well Drained

Cardoon Planting Risk Windows

Early Start (70% safe) ✓ Fits season (57 days to spare)
Transplant: Mar 23 🍅 Harvest: Jul 27 – Sep 7
Recommended (50%) ✓ Fits season (61 days to spare)
Transplant: Mar 28 🍅 Harvest: Aug 1 – Sep 12
Safe Start (90%) ✓ Fits season (54 days to spare)
Transplant: Apr 21 🍅 Harvest: Aug 25 – Oct 6

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 Phillips County

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

Soil pH

Your soil pH (5.6–6.7) overlaps with Cardoon's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.8%). 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
0.9″/week
You supply
0.2″/week
Watering frequency Only during dry spells
Season total 352 gal / 100 sq ft
Drought risk

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

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 4.4" 0" ❄️ Dormant
Feb 4" 0" ❄️ Dormant
Mar 4.3" 5.5" 0" ✅ Rainfall sufficient
Apr 4.3" 3.9" 0.4" 💧 Light watering
May 4.3" 4.4" 0" ✅ Rainfall sufficient
Jun 4.3" 4.4" 0" ✅ Rainfall sufficient
Jul 4.3" 5.2" 0" ✅ Rainfall sufficient
Aug 4.3" 4.3" 0" ✅ Rainfall sufficient
Sep 4.3" 3.2" 1.1" 💧 Light watering
Oct 4.3" 2.9" 1.4" 💧 Light watering
Nov 4.3" 3.6" 0.7" 💧 Light watering
Dec 4.2" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Phillips 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 ~2,666 GDD — county provides 4,799 GDD Excellent fit

Cardoon Planting Timeline — Phillips County, AR

Cardoon Planting Calendar

Activity When Date Range
Transplant Outdoors March 28 Mar 28 – Apr 11
Harvest August 1 Aug 1 – Sep 12

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

120–150 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

243 days in Phillips County

Growing Tips for Cardoon in Phillips County

Direct sow Cardoon outdoors after March 14 in Phillips 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 Phillips County, AR?

Phillips County is in Zone 8a with an average last frost of March 14. Plan your Cardoon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Phillips County, AR?

Phillips County, Arkansas is in USDA Hardiness Zone 8a. The average last spring frost is March 14 and first fall frost is November 12.

When should I plant Cardoon in Phillips County, AR?

In Phillips County, AR, plant Cardoon after the last frost (around March 14) and before the first frost (around November 12). Best results when soil holds above 50°F.

What growing zone is Phillips County, AR for Cardoon?

Phillips County sits in USDA Zone 8a. Cardoon grows reliably in zones 7a through 10b, so it's a good fit here.

Can Cardoon grow in Phillips County's climate?

Yes — Cardoon grows well in Phillips County's temperate climate. Phillips County averages a 243-day frost-free season, with last frost around March 14 and first frost around November 12.

🌱

Your Phillips County Garden Planner — Free

A 22-page printable planner built for Phillips 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 Phillips County, AR. Local conditions may vary. Last updated: July 2026.

Sources & credits

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