When to Plant Cardoon in Red River County, TX
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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.
Red River County, Texas is in USDA Zone 8a. The average last spring frost is March 18 and the first fall frost is November 11, giving you a growing season of approximately 238 days.
At an elevation of 314 feet, Red River County receives approximately 60.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91°F, providing good warmth for Cardoon during the growing season. Sandy soil warms quickly in spring — great for early planting — but Cardoon will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cardoon root diseases.
Red River County Soil Profile
Soil Type
Sandy Loam
Soil pH
5.4-6.2
Drainage
Well Drained
Plant Planting Risk Windows
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 Red River County
How your county's soil matches Cardoon's growing requirements.
Soil pH
Your soil pH (5.4–6.2) is more acidic than Cardoon prefers (6.0–7.5). Add garden lime to raise pH.
Soil Texture
Sandy soil in Red River County warms quickly in spring but drains fast. Cardoon will need more frequent watering and regular compost additions to retain nutrients.
Organic Matter
Organic matter is low (1.9%). Add 2-3 inches of compost before planting Cardoon.
How to Plant Cardoon
Plant Water Budget
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 | — | 1.4" | 0" | ❄️ Dormant |
| Feb | — | 2" | 0" | ❄️ Dormant |
| Mar | 4.3" | 4.2" | 0.1" | 💧 Light watering |
| Apr | 4.3" | 6" | 0" | ✅ Rainfall sufficient |
| May | 4.3" | 9.8" | 0" | ✅ Rainfall sufficient |
| Jun | 4.3" | 8.6" | 0" | ✅ Rainfall sufficient |
| Jul | 4.3" | 8.6" | 0" | ✅ Rainfall sufficient |
| Aug | 4.3" | 8" | 0" | ✅ Rainfall sufficient |
| Sep | 4.3" | 5.1" | 0" | ✅ Rainfall sufficient |
| Oct | 4.3" | 3.9" | 0.4" | 💧 Light watering |
| Nov | 4.3" | 1.8" | 2.5" | 🚿 Regular watering |
| Dec | — | 1.4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Red River 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 Planting Timeline — Red River County, TX
Cardoon Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Transplant Outdoors | April 1 | Apr 1 – Apr 15 |
| Harvest | August 5 | Aug 5 – Sep 16 |
Plant 1" deep · 30" apart · Rows 42" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | Transplant Outdoors |
| May | — |
| June | — |
| July | — |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| 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: too_acidic
🗺️ USDA Zone
Zone 8a
📆 Growing Season
238 days in Red River County
Growing Tips for Cardoon in Red River County
Direct sow Cardoon outdoors after March 18 in Red River County when soil has warmed and frost danger has passed.
Sandy soil in Red River County dries quickly — mulch Cardoon with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
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
Check more plant combinations with our Companion Planting Checker →
Cardoon in Other Locations
Frequently Asked Questions
When should I plant Cardoon in Red River County, TX?
Red River County is in Zone 8a with an average last frost of March 18. Plan your Cardoon planting based on this frost date — see the calendar above for exact timing.
What planting zone is Red River County, TX?
Red River County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 18 and first fall frost is November 11.
Your Red River County Garden Planner — Free
A 24-page printable planner built for Red River 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.