When to Plant Radicchio in Brown County, TX
Radicchio is an Italian chicory with stunning red and white leaves and a pleasantly bitter flavor. It forms tight heads and is used in salads, grilled, or braised.
Brown County, Texas is in USDA Zone 8a. The average last spring frost is March 22 and the first fall frost is November 14, giving you a growing season of approximately 237 days.
At an elevation of 4,423 feet, Brown County receives approximately 55.4 inches of rainfall annually with predominantly loam soil. Summer highs average 96°F, so Radicchio may need afternoon shade and extra watering during peak heat. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Radicchio root diseases.
Brown County Soil Profile
Soil Type
Loam
Soil pH
6.8-7.5
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 Brown County
How your county's soil matches Radicchio's growing requirements.
Soil pH
Your soil pH (6.8–7.5) is more alkaline than Radicchio prefers (6.0–7.0). Add sulfur or peat moss to lower pH.
Soil Texture
The loam soil in Brown County is excellent for Radicchio — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.1%). Annual compost additions will help Radicchio.
How to Plant Radicchio
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Radicchio
Sow every 6.9 weeks. Last sowing by Aug 26 to harvest before frost.
For a dedicated fall crop, sow by Sep 05.
Plant Water Budget
Monthly Watering Guide for Radicchio
Radicchio needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Radicchio Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.6" | 0" | ❄️ Dormant |
| Feb | — | 1.6" | 0" | ❄️ Dormant |
| Mar | 3" | 3.8" | 0" | ✅ Rainfall sufficient |
| Apr | 3" | 5.9" | 0" | ✅ Rainfall sufficient |
| May | 3" | 7.8" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 8.3" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 7.4" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 7.3" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 5.4" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 3.1" | 0" | ✅ Rainfall sufficient |
| Nov | 3" | 1.7" | 1.3" | 💧 Light watering |
| Dec | — | 1.6" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Brown County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Radicchio 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.
Radicchio Planting Timeline — Brown County, TX
Radicchio Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 15 | Feb 15 – Mar 1 |
| Transplant Outdoors | March 22 | Mar 22 – Apr 5 |
| Direct Sow | March 8 | Mar 8 – Mar 29 |
| Harvest | May 24 | May 24 – Jun 28 |
| Fall Sowing | September 5 | Sep 5 – Sep 19 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
60–80 days
🧪 Soil pH
Needs 6–7 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 8a
📆 Growing Season
237 days in Brown County
Growing Tips for Radicchio in Brown County
Direct sow Radicchio outdoors after March 22 in Brown County when soil has warmed and frost danger has passed.
With summer highs reaching 96°F in Brown County, provide afternoon shade for Radicchio and water deeply in the morning.
Common pests for Radicchio in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Start in late summer for fall harvest. The red color develops with cool nights and light frost. Harvest when heads are firm and compact.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Radicchio in Other Locations
Frequently Asked Questions
When should I plant Radicchio in Brown County, TX?
Brown County is in Zone 8a with an average last frost of March 22. Plan your Radicchio planting based on this frost date — see the calendar above for exact timing.
What planting zone is Brown County, TX?
Brown County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 22 and first fall frost is November 14.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Brown County gardeners in Zone 8a organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.