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When to Plant Chard in Pecos County, TX

Pecos County, Texas Zone 8b May

May in Pecos County, Texas — your action list

Welcome to May in Zone 8b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost March 13
Avg. first frost November 15
Soil temp (4") 67°F
Watering Critical
Pest pressure Moderate
Daylight 13.6 hrs
  1. Harvest chard as they ripen

    Don't tug. Use scissors or pruners for clean cuts — torn stems invite disease.

Get ahead of June
  • First harvests: chard

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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.

Pecos County, Texas is in USDA Zone 8b. The average last spring frost is March 13 and the first fall frost is November 15, giving you a growing season of approximately 247 days.

At an elevation of 1,445 feet, Pecos County receives approximately 42.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 103°F, so Chard may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Chard will need more frequent watering and organic matter to retain nutrients.

Pecos County, TX (Zone 8b) Long season
247 days
Last Spring Frost March 13
247 growing days
First Fall Frost November 15

Pecos County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.4-8.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (147 days to spare)
Start indoors: Jan 28 Transplant: Mar 4 🍅 Harvest: Apr 29 – Jun 17
Recommended (50%) ✓ Fits season (142 days to spare)
Start indoors: Feb 6 Transplant: Mar 13 🍅 Harvest: May 8 – Jun 26
Safe Start (90%) ✓ Fits season (133 days to spare)
Start indoors: Mar 4 Transplant: Apr 8 🍅 Harvest: Jun 3 – 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 Pecos County

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

Soil pH

Your soil pH (7.4–8.6) is more alkaline than Chard prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

Sandy soil in Pecos County warms quickly in spring but drains fast. Chard will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is low (0.9%). 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 247-day season

Sow every 5.7 weeks. Last sowing by Sep 16 to harvest before frost.

For a dedicated fall crop, sow by Sep 06.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
0.7″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 217 gal / 100 sq ft
Drought risk

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

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 2.6" 0" ❄️ Dormant
Feb 2.3" 0" ❄️ Dormant
Mar 3.5" 2.6" 0.9" 💧 Light watering
Apr 3.5" 1.6" 1.9" 🚿 Regular watering
May 3.5" 0.9" 2.6" 🚿 Regular watering
Jun 3.5" 1.6" 1.9" 🚿 Regular watering
Jul 3.5" 7.8" 0" ✅ Rainfall sufficient
Aug 3.5" 8.8" 0" ✅ Rainfall sufficient
Sep 3.5" 5.6" 0" ✅ Rainfall sufficient
Oct 3.5" 3.6" 0" ✅ Rainfall sufficient
Nov 3.5" 2.3" 1.2" 💧 Light watering
Dec 2.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Pecos 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 ~1,499 GDD — county provides 6,730 GDD Excellent fit

Chard Planting Timeline — Pecos County, TX

Chard Planting Calendar

Activity When Date Range
Start Indoors February 6 Feb 6 – Feb 20
Transplant Outdoors March 13 Mar 13 – Mar 27
Direct Sow February 27 Feb 27 – Mar 20
Harvest May 8 May 8 – Jun 26
Fall Sowing September 6 Sep 6 – Sep 20

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

0.8"/week · Only during dry spells

📅 Days to Maturity

50–60 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 8b

📆 Growing Season

247 days in Pecos County

Growing Tips for Chard in Pecos County

Direct sow Chard outdoors after March 13 in Pecos County when soil has warmed and frost danger has passed.

Sandy soil in Pecos County dries quickly — mulch Chard with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

Summer highs in Pecos County reach 103°F — grow Chard as a spring or fall crop. Use shade cloth if planting in summer.

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 Pecos County, TX?

Pecos County is in Zone 8b with an average last frost of March 13. Plan your Chard planting based on this frost date — see the calendar above for exact timing.

What planting zone is Pecos County, TX?

Pecos County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 13 and first fall frost is November 15.

🌱

Your Pecos County Garden Planner — Free

A 24-page printable planner built for Pecos County (Zone 8b). 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 Pecos 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.