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When to Plant Cardoon in Bee County, TX

Bee County, Texas Zone 9b May

What to do in May

We've pulled the most time-sensitive tasks for Bee County, Texas this May and put them front and centre. Tackle them in order.

Avg. last frost February 13
Avg. first frost December 11
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 13.4 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.

Bee County, Texas is in USDA Zone 9b. The average last spring frost is February 13 and the first fall frost is December 11, giving you a growing season of approximately 301 days.

At an elevation of 2,076 feet, Bee County receives approximately 68.3 inches of rainfall annually with predominantly loam soil. Summer highs average 103°F, so Cardoon may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cardoon root diseases.

Bee County, TX (Zone 9b) Year-round
301 days
Last Spring Frost February 13
301 growing days
First Fall Frost December 11
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Bee County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (131 days to spare)
Transplant: Feb 9 🍅 Harvest: Jun 15 – Jul 27
Recommended (50%) ✓ Fits season (119 days to spare)
Transplant: Feb 27 🍅 Harvest: Jul 3 – Aug 14
Safe Start (90%) ✓ Fits season (109 days to spare)
Transplant: Mar 19 🍅 Harvest: Jul 23 – Sep 3

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 Bee County

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

Soil pH

Your soil pH (6.6–7.5) is within Cardoon's preferred range (6.0–7.5).

Soil Texture

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

Organic Matter

Organic matter is low (1.9%). Add 2-3 inches of compost before planting Cardoon.

How to Plant Cardoon

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 135 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 1.8" 0" ❄️ Dormant
Feb 4.3" 2.4" 1.9" 💧 Light watering
Mar 4.3" 4.6" 0" ✅ Rainfall sufficient
Apr 4.3" 6.8" 0" ✅ Rainfall sufficient
May 4.3" 10.5" 0" ✅ Rainfall sufficient
Jun 4.3" 9.5" 0" ✅ Rainfall sufficient
Jul 4.3" 8.8" 0" ✅ Rainfall sufficient
Aug 4.3" 8.1" 0" ✅ Rainfall sufficient
Sep 4.3" 7.3" 0" ✅ Rainfall sufficient
Oct 4.3" 3.9" 0.4" 💧 Light watering
Nov 4.3" 2.6" 1.7" 💧 Light watering
Dec 4.3" 1.9" 2.4" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Bee 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 ~3,679 GDD — county provides 8,229 GDD Excellent fit

Cardoon Planting Timeline — Bee County, TX

Cardoon Planting Calendar

Activity When Date Range
Transplant Outdoors February 27 Feb 27 – Mar 13
Harvest July 3 Jul 3 – Aug 14

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 9b

📆 Growing Season

301 days in Bee County

Growing Tips for Cardoon in Bee County

Direct sow Cardoon outdoors after February 13 in Bee County when soil has warmed and frost danger has passed.

With summer highs reaching 103°F in Bee County, provide afternoon shade for Cardoon and water deeply in the morning.

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 Bee County, TX?

Bee County is in Zone 9b with an average last frost of February 13. Plan your Cardoon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Bee County, TX?

Bee County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 13 and first fall frost is December 11.

🌱

Your Bee County Garden Planner — Free

A 24-page printable planner built for Bee County (Zone 9b). 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 Bee County, TX. 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.