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When to Plant Watermelon in Childress County, TX

Childress County, Texas Zone 7b May

Your May planting checklist for Childress County, Texas

Welcome to May in Zone 7b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost March 29
Avg. first frost November 7
Soil temp (4") 66°F
Watering Critical
Pest pressure Moderate
Daylight 13.8 hrs
Looking ahead to June
  • First harvests: watermelon

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Watermelon is a sprawling vine crop that produces sweet, juicy fruits in hot weather. Varieties range from personal-sized icebox types to 50-pound giants.

Childress County, Texas is in USDA Zone 7b. The average last spring frost is March 29 and the first fall frost is November 7, giving you a growing season of approximately 223 days.

At an elevation of 1,793 feet, Childress County receives approximately 49 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 98°F, so Watermelon may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Watermelon will need more frequent watering and organic matter to retain nutrients.

Childress County, TX (Zone 7b) Long season
223 days
Last Spring Frost March 29
223 growing days
First Fall Frost November 7

Childress County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.3-8.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (90 days to spare)
Start indoors: Feb 21 Transplant: Apr 4 🍅 Harvest: Jun 13 – Aug 1
Recommended (50%) ✓ Fits season (90 days to spare)
Start indoors: Mar 1 Transplant: Apr 12 🍅 Harvest: Jun 21 – Aug 9
Safe Start (90%) ✓ Fits season (88 days to spare)
Start indoors: Mar 17 Transplant: Apr 28 🍅 Harvest: Jul 7 – Aug 25

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 Childress County

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

Soil pH

Your soil pH (7.3–8.6) is more alkaline than Watermelon prefers (6.0–7.5). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (1.0%). Add 2-3 inches of compost before planting Watermelon.

How to Plant Watermelon

1"
Planting Depth
30"
Between Plants
42"
Between Rows

Succession Planting Watermelon

3
successive plantings in your 223-day season

Sow every 8 weeks. Last sowing by Jul 30 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.9″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,375 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Watermelon

Watermelon needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Watermelon Needs Rainfall You Supplement Action
Jan 3.2" 0" ❄️ Dormant
Feb 3.1" 0" ❄️ Dormant
Mar 6.5" 3" 3.5" 🚿 Regular watering
Apr 6.5" 1.9" 4.6" 🚿 Regular watering
May 6.5" 1.1" 5.4" 🚿 Regular watering
Jun 6.5" 1.9" 4.6" 🚿 Regular watering
Jul 6.5" 8" 0" ✅ Rainfall sufficient
Aug 6.5" 9.3" 0" ✅ Rainfall sufficient
Sep 6.5" 6.4" 0.1" 💧 Light watering
Oct 6.5" 4" 2.5" 💧 Light watering
Nov 6.5" 3.1" 3.4" 🚿 Regular watering
Dec 3.9" 0" ❄️ Dormant

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

Watermelon 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.

Watermelon needs ~1,998 GDD — county provides 5,240 GDD Excellent fit

Watermelon Planting Timeline — Childress County, TX

Watermelon Planting Calendar

Activity When Date Range
Start Indoors March 1 Mar 1 – Mar 15
Transplant Outdoors April 12 Apr 12 – Apr 26
Direct Sow April 5 Apr 5 – Apr 26
Harvest June 21 Jun 21 – Aug 9

Plant 1" deep · 30" apart · Rows 42" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 1-2 times/week

📅 Days to Maturity

70–100 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7b

📆 Growing Season

223 days in Childress County

Growing Tips for Watermelon in Childress County

Direct sow Watermelon outdoors after March 29 in Childress County when soil has warmed and frost danger has passed.

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

With summer highs reaching 98°F in Childress County, provide afternoon shade for Watermelon and water deeply in the morning.

Common pests for Watermelon in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 3-4 weeks early or direct sow after soil is warm. Plant on mounds with plenty of space. Check ripeness by looking for a yellow ground spot and dull thump when tapped.

Recommended Watermelon Varieties for Childress County

Full-size melons that thrive with your long season

Crimson Sweet (85d) Charleston Gray (85d) Moon and Stars (95d)

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Watermelon in Childress County, TX?

Childress County is in Zone 7b with an average last frost of March 29. Plan your Watermelon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Childress County, TX?

Childress County, Texas is in USDA Hardiness Zone 7b. The average last spring frost is March 29 and first fall frost is November 7.

🌱

Your Childress County Garden Planner — Free

A 24-page printable planner built for Childress 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 Childress 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.