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When to Plant Cardoon in Summers County, WV

Summers County, West Virginia Zone 7a May

Your May gardening checklist

May is a pivotal month for Summers County, West Virginia gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost May 5
Avg. first frost October 14
Soil temp (4") 59°F
Watering Low
Pest pressure Low
Daylight 14 hrs
  1. Set out cardoon seedlings

    Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.

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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.

Summers County, West Virginia is in USDA Zone 7a. The average last spring frost is May 5 and the first fall frost is October 14, giving you a growing season of approximately 162 days.

At an elevation of 2,610 feet, Summers County receives approximately 53.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 89°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.

Summers County, WV (Zone 7a) Moderate season
162 days
Last Spring Frost May 5
162 growing days
First Fall Frost October 14

Summers County Soil Profile

Soil Type

Silt Loam

Soil pH

5.7-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 13 🍅 Harvest: Sep 16 – Oct 28
Recommended (50%) ✗ May not fit
Transplant: May 19 🍅 Harvest: Sep 22 – Nov 3
Safe Start (90%) ✗ May not fit
Transplant: Jun 5 🍅 Harvest: Oct 9 – Nov 20

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 Summers County

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

Soil pH

Your soil pH (5.7–6.7) overlaps with Cardoon's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Cardoon.

How to Plant Cardoon

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.4″/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 4.8" 0" ❄️ Dormant
Feb 3.8" 0" ❄️ Dormant
Mar 4.7" 0" ❄️ Dormant
Apr 3.5" 0" ❄️ Dormant
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 4.8" 0" ✅ Rainfall sufficient
Jul 4.3" 6.2" 0" ✅ Rainfall sufficient
Aug 4.3" 4.7" 0" ✅ Rainfall sufficient
Sep 4.3" 4" 0.3" 💧 Light watering
Oct 4.3" 3.3" 1" 💧 Light watering
Nov 4.3" 0" ❄️ Dormant
Dec 4.7" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Summers 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 ~2,261 GDD — county provides 2,713 GDD Good fit

Cardoon Planting Timeline — Summers County, WV

Cardoon Planting Calendar

Activity When Date Range
Transplant Outdoors May 19 May 19 – Jun 2
Harvest September 22 Sep 22 – Nov 3

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

Month-by-Month Timeline

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

162 days in Summers County

Growing Tips for Cardoon in Summers County

Direct sow Cardoon outdoors after May 05 in Summers County when soil has warmed and frost danger has passed.

Your 162.0-day growing season in Summers County is tight for Cardoon (120.0-150.0 days to maturity). Start indoors and choose early-maturing varieties.

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 Summers County, WV?

Summers County is in Zone 7a with an average last frost of May 5. Plan your Cardoon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Summers County, WV?

Summers County, West Virginia is in USDA Hardiness Zone 7a. The average last spring frost is May 5 and first fall frost is October 14.

🌱

Your Summers County Garden Planner — Free

A 24-page printable planner built for Summers 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 Summers County, WV. Local conditions may vary. Last updated: May 2026.

Sources & credits

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