Blog

When to Plant Chard in Shackelford County, TX

Shackelford County, Texas Zone 8a May

Your May game plan for Shackelford County, Texas

Each item below is timed to Shackelford County, Texas's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost March 30
Avg. first frost November 11
Soil temp (4") 57°F
Watering Low
Pest pressure Moderate
Daylight 13.7 hrs
  1. Start chard under lights

    Bottom-water once the first true leaves appear — it keeps stems dry and knocks back damping-off.

  2. Pick chard

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

Looking ahead to June
  • First harvests: chard

Instant PDF download. No spam, unsubscribe any time.

Swiss chard is a colorful, heat-tolerant green with large crinkled leaves and vibrant stalks in red, yellow, and white. Both the leaves and stems are edible and nutritious.

Shackelford County, Texas is in USDA Zone 8a. The average last spring frost is March 30 and the first fall frost is November 11, giving you a growing season of approximately 226 days.

At an elevation of 4,145 feet, Shackelford County receives approximately 59.8 inches of rainfall annually with predominantly loam soil. Summer highs average 89°F, providing good warmth for Chard during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Chard root diseases.

Shackelford County, TX (Zone 8a) Long season
226 days
Last Spring Frost March 30
226 growing days
First Fall Frost November 11

Shackelford County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Start indoors: Feb 12 Transplant: Mar 19 🍅 Harvest: May 14 – Jul 2
Recommended (50%) ✓ Fits season (121 days to spare)
Start indoors: Feb 23 Transplant: Mar 30 🍅 Harvest: May 25 – Jul 13
Safe Start (90%) ✓ Fits season (118 days to spare)
Start indoors: Mar 12 Transplant: Apr 16 🍅 Harvest: Jun 11 – Jul 30

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 Shackelford County

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

Soil pH

Your soil pH (6.4–7.5) overlaps with Chard's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

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

How to Plant Chard

1"
Planting Depth
15"
Between Plants
24"
Between Rows

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

Succession Planting Chard

5
successive plantings in your 226-day season

Sow every 5.7 weeks. Last sowing by Sep 12 to harvest before frost.

For a dedicated fall crop, sow by Sep 02.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Chard

Chard needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Chard Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 2" 0" ❄️ Dormant
Mar 3.5" 3.4" 0.1" 💧 Light watering
Apr 3.5" 6.8" 0" ✅ Rainfall sufficient
May 3.5" 8.6" 0" ✅ Rainfall sufficient
Jun 3.5" 9.4" 0" ✅ Rainfall sufficient
Jul 3.5" 8.9" 0" ✅ Rainfall sufficient
Aug 3.5" 6.6" 0" ✅ Rainfall sufficient
Sep 3.5" 5.1" 0" ✅ Rainfall sufficient
Oct 3.5" 3.7" 0" ✅ Rainfall sufficient
Nov 3.5" 2.1" 1.4" 💧 Light watering
Dec 1.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Shackelford County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Chard 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.

Chard needs ~921 GDD — county provides 3,785 GDD Excellent fit

Chard Planting Timeline — Shackelford County, TX

Chard 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 May 25 May 25 – Jul 13
Fall Sowing September 2 Sep 2 – Sep 16

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.8"/week · Natural rainfall sufficient

📅 Days to Maturity

50–60 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

226 days in Shackelford County

Growing Tips for Chard in Shackelford County

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

General growing tips

Direct sow or transplant after last frost. Harvest outer leaves regularly to encourage continuous production. Chard tolerates both heat and light frost.

Companion Planting

Good Companions

Avoid Planting Near

  • Corn
  • Cucumbers

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Chard in Shackelford County, TX?

Shackelford County is in Zone 8a with an average last frost of March 30. Plan your Chard planting based on this frost date — see the calendar above for exact timing.

What planting zone is Shackelford County, TX?

Shackelford County, Texas is in USDA Hardiness Zone 8a. The average last spring frost is March 30 and first fall frost is November 11.

🌱

Your Shackelford County Garden Planner — Free

A 24-page printable planner built for Shackelford 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.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Shackelford 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.