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When to Plant Cardoon in Live Oak County, TX

Live Oak County, Texas Zone 9b May

Live Oak County, Texas gardeners: here's your May plan

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

Avg. last frost February 13
Avg. first frost December 7
Soil temp (4") 68°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.

Live Oak County, Texas is in USDA Zone 9b. The average last spring frost is February 13 and the first fall frost is December 7, giving you a growing season of approximately 297 days.

At an elevation of 3,092 feet, Live Oak County receives approximately 63.3 inches of rainfall annually with predominantly loam soil. Summer highs average 104°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.

Live Oak County, TX (Zone 9b) Year-round
297 days
Last Spring Frost February 13
297 growing days
First Fall Frost December 7
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Live Oak County Soil Profile

Soil Type

Loam

Soil pH

6.8-7.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (133 days to spare)
Transplant: Feb 3 🍅 Harvest: Jun 9 – Jul 21
Recommended (50%) ✓ Fits season (115 days to spare)
Transplant: Feb 27 🍅 Harvest: Jul 3 – Aug 14
Safe Start (90%) ✓ Fits season (108 days to spare)
Transplant: Mar 20 🍅 Harvest: Jul 24 – Sep 4

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 Live Oak County

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

Soil pH

Your soil pH (6.8–7.8) overlaps with Cardoon's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.3%). 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
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 343 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 1.8" 0" ❄️ Dormant
Feb 4.3" 2.3" 2" 💧 Light watering
Mar 4.3" 4.4" 0" ✅ Rainfall sufficient
Apr 4.3" 7.4" 0" ✅ Rainfall sufficient
May 4.3" 7.9" 0" ✅ Rainfall sufficient
Jun 4.3" 9.9" 0" ✅ Rainfall sufficient
Jul 4.3" 8.9" 0" ✅ Rainfall sufficient
Aug 4.3" 7.4" 0" ✅ Rainfall sufficient
Sep 4.3" 6.2" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 1.8" 2.5" 🚿 Regular watering
Dec 4.3" 1.7" 2.6" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Live Oak 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 ~3,780 GDD — county provides 8,344 GDD Excellent fit

Cardoon Planting Timeline — Live Oak 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: acceptable

🗺️ USDA Zone

Zone 9b

📆 Growing Season

297 days in Live Oak County

Growing Tips for Cardoon in Live Oak County

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

With summer highs reaching 104°F in Live Oak 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 Live Oak County, TX?

Live Oak 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 Live Oak County, TX?

Live Oak County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 13 and first fall frost is December 7.

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Your Live Oak County Garden Planner — Free

A 24-page printable planner built for Live Oak 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 Live Oak 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.