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When to Plant Radicchio in Hardeman County, TX

Hardeman County, Texas Zone 7b June

Top priorities for Hardeman County, Texas gardeners in June

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

Avg. last frost March 30
Avg. first frost November 7
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 14.3 hrs
  1. It's harvest week for radicchio

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

To set up a strong July, finish these tasks
  • First harvests: radicchio

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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.

Hardeman County, Texas is in USDA Zone 7b. The average last spring frost is March 30 and the first fall frost is November 7, giving you a growing season of approximately 222 days.

At an elevation of 2,010 feet, Hardeman County receives approximately 47.8 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Radicchio during the growing season.

Hardeman County, TX (Zone 7b) Long season
222 days
Last Spring Frost March 30
222 growing days
First Fall Frost November 7
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Hardeman County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.3

Drainage

Well Drained

Radicchio Planting Risk Windows

Early Start (70% safe) ✓ Fits season (121 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: May 25 – Jun 29
Recommended (50%) ✓ Fits season (124 days to spare)
Start indoors: Feb 23 Transplant: Mar 30 🍅 Harvest: Jun 1 – Jul 6
Safe Start (90%) ✓ Fits season (121 days to spare)
Start indoors: Mar 11 Transplant: Apr 15 🍅 Harvest: Jun 17 – Jul 22

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 Hardeman County

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

Soil pH

Your soil pH (6.7–7.3) overlaps with Radicchio's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Radicchio.

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Radicchio.

How to Plant Radicchio

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Radicchio

4
successive plantings in your 222-day season

Sow every 6.9 weeks. Last sowing by Aug 19 to harvest before frost.

For a dedicated fall crop, sow by Aug 29.

Radicchio Water Budget

Plant needs
0.7″/week
Rainfall provides
0.9″/week
You supply
0.0″/week
Watering frequency Only during dry spells
Season total 13 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

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 1.4" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 3" 3" 0" ✅ Rainfall sufficient
Apr 3" 4.7" 0" ✅ Rainfall sufficient
May 3" 7.5" 0" ✅ Rainfall sufficient
Jun 3" 7.1" 0" ✅ Rainfall sufficient
Jul 3" 6.7" 0" ✅ Rainfall sufficient
Aug 3" 5.3" 0" ✅ Rainfall sufficient
Sep 3" 5.1" 0" ✅ Rainfall sufficient
Oct 3" 3" 0" ✅ Rainfall sufficient
Nov 3" 1.5" 1.5" 🚿 Regular watering
Dec 1.1" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Hardeman 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 needs ~1,172 GDD — county provides 3,718 GDD Excellent fit

Radicchio Planting Timeline — Hardeman County, TX

Radicchio Planting Calendar

Activity When Date Range
Start Indoors February 23 Feb 23 – Mar 9
Transplant Outdoors March 30 Mar 30 – Apr 13
Direct Sow March 16 Mar 16 – Apr 6
Harvest June 1 Jun 1 – Jul 6
Fall Sowing August 29 Aug 29 – Sep 12

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March Start Indoors Transplant Outdoors Direct Sow
April Transplant Outdoors Direct Sow
May
June Harvest
July Harvest
August Fall Sowing
September Fall Sowing
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.7"/week · Only during dry spells

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 7b

📆 Growing Season

222 days in Hardeman County

Growing Tips for Radicchio in Hardeman County

Direct sow Radicchio outdoors after March 30 in Hardeman County when soil has warmed and frost danger has passed.

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

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Radicchio in Hardeman County, TX?

Hardeman County is in Zone 7b with an average last frost of March 30. Plan your Radicchio planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hardeman County, TX?

Hardeman County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 30 and first fall frost is November 7.

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Your Hardeman County Garden Planner — Free

A 22-page printable planner built for Hardeman County (Zone 7b). 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 Hardeman County, TX. Local conditions may vary. Last updated: June 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.