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When to Plant Cardoon in Murray County, OK

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.

Murray County, Oklahoma is in USDA Zone 7b. The average last spring frost is March 28 and the first fall frost is November 2, giving you a growing season of approximately 219 days.

At an elevation of 640 feet, Murray County receives approximately 23.2 inches of rainfall annually with predominantly loam soil. Summer highs average 94ยฐF, providing good warmth for Cardoon during the growing season.

Murray County, OK (Zone 7b) Long season
219 days
Last Spring Frost March 28
219 growing days
First Fall Frost November 2

Murray County Soil Profile

Soil Type

Loam

Soil pH

6.5-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (39 days to spare)
Transplant: Apr 4 🍅 Harvest: Aug 8 – Sep 19
Recommended (50%) ✓ Fits season (37 days to spare)
Transplant: Apr 11 🍅 Harvest: Aug 15 – Sep 26
Safe Start (90%) ✓ Fits season (38 days to spare)
Transplant: May 1 🍅 Harvest: Sep 4 – Oct 16

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.4″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,298 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Cardoon needs ~2,768 GDD — county provides 4,489 GDD Excellent fit

Cardoon Planting Timeline โ€” Murray County, OK

Cardoon Planting Calendar

Activity When Date Range
Transplant Outdoors April 11 Apr 11 โ€“ Apr 25
Harvest August 15 Aug 15 โ€“ Sep 26

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

Month-by-Month Timeline

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

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

120โ€“150 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 7b

Growing Season

219 days

Growing Tips for Murray County

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Cardoon in Murray County, OK?

Murray County is in Zone 7b with an average last frost of March 28. Plan your Cardoon planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Murray County, OK?

Murray County, Oklahoma is in USDA Hardiness Zone 7b. The average last spring frost is March 28 and first fall frost is November 2.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Murray County gardeners in Zone 7b organize planting dates, track what's growing, and never miss a planting window.

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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 Murray County, OK. Local conditions may vary. Last updated: April 2026.