Blog

When to Plant Chard in Newton County, TX

Newton County, Texas Zone 9a May

What to do in May

A quick May briefing for Newton County, Texas gardeners — what's urgent, what's next, and what can wait.

Avg. last frost March 9
Avg. first frost November 16
Soil temp (4") 72°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. Pick chard

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

To set up a strong June, finish these tasks
  • 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.

Newton County, Texas is in USDA Zone 9a. The average last spring frost is March 9 and the first fall frost is November 16, giving you a growing season of approximately 252 days.

At an elevation of 33 feet, Newton County receives approximately 77 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 92°F, providing good warmth for Chard during the growing season. Sandy soil warms quickly in spring — great for early planting — but Chard will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Chard root diseases.

Newton County, TX (Zone 9a) Long season
252 days
Last Spring Frost March 9
252 growing days
First Fall Frost November 16
Share this guide:

Newton County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.3-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (146 days to spare)
Start indoors: Feb 3 Transplant: Mar 3 🍅 Harvest: Apr 28 – Jun 16
Recommended (50%) ✓ Fits season (147 days to spare)
Start indoors: Feb 9 Transplant: Mar 9 🍅 Harvest: May 4 – Jun 22
Safe Start (90%) ✓ Fits season (134 days to spare)
Start indoors: Mar 10 Transplant: Apr 7 🍅 Harvest: Jun 2 – Jul 21

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 Newton County

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

Soil pH

Your soil pH (5.3–6.3) is more acidic than Chard prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Newton 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 moderate (2.3%). Annual compost additions will help Chard.

How to Plant Chard

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

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Chard

6
successive plantings in your 252-day season

Sow every 5.7 weeks. Last sowing by Sep 17 to harvest before frost.

For a dedicated fall crop, sow by Sep 21.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
1.3″/week
Watering frequency Natural rainfall sufficient
Season total 0 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 1.8" 0" ❄️ Dormant
Feb 2.6" 0" ❄️ Dormant
Mar 3.5" 5.1" 0" ✅ Rainfall sufficient
Apr 3.5" 8.6" 0" ✅ Rainfall sufficient
May 3.5" 10.7" 0" ✅ Rainfall sufficient
Jun 3.5" 11.9" 0" ✅ Rainfall sufficient
Jul 3.5" 9.9" 0" ✅ Rainfall sufficient
Aug 3.5" 9.3" 0" ✅ Rainfall sufficient
Sep 3.5" 7.4" 0" ✅ Rainfall sufficient
Oct 3.5" 5.4" 0" ✅ Rainfall sufficient
Nov 3.5" 2.7" 0.8" 💧 Light watering
Dec 1.8" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Newton 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 ~1,045 GDD — county provides 4,788 GDD Excellent fit

Chard Planting Timeline — Newton County, TX

Chard Planting Calendar

Activity When Date Range
Start Indoors February 9 Feb 9 – Feb 23
Transplant Outdoors March 9 Mar 9 – Mar 23
Direct Sow February 16 Feb 16 – Mar 9
Harvest May 4 May 4 – Jun 22
Fall Sowing September 21 Sep 21 – Oct 5

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 Fall Sowing
November
December
Share this guide:

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: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

252 days in Newton County

Growing Tips for Chard in Newton County

Direct sow Chard outdoors after March 09 in Newton County when soil has warmed and frost danger has passed.

Sandy soil in Newton 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 Newton County reach 92°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 Newton County, TX?

Newton County is in Zone 9a with an average last frost of March 9. Plan your Chard planting based on this frost date — see the calendar above for exact timing.

What planting zone is Newton County, TX?

Newton County, Texas is in USDA Hardiness Zone 9a. The average last spring frost is March 9 and first fall frost is November 16.

🌱

Your Newton County Garden Planner — Free

A 24-page printable planner built for Newton County (Zone 9a). 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 Newton 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.