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When to Plant Corn in Collingsworth County, TX

Corn is a warm-season grass grown for its sweet ears, which are best eaten soon after harvest. It is wind-pollinated and must be planted in blocks for good kernel fill.

Collingsworth County, Texas is in USDA Zone 7a. The average last spring frost is March 28 and the first fall frost is November 6, giving you a growing season of approximately 223 days.

At an elevation of 4,944 feet, Collingsworth County receives approximately 48.6 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 95ยฐF, so Corn may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Corn will need more frequent watering and organic matter to retain nutrients.

Collingsworth County, TX (Zone 7a) Long season
223 days
Last Spring Frost March 28
223 growing days
First Fall Frost November 6

Collingsworth 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 (102 days to spare)
Transplant: Mar 22 🍅 Harvest: May 24 – Jul 19
Recommended (50%) ✓ Fits season (104 days to spare)
Transplant: Mar 28 🍅 Harvest: May 30 – Jul 25
Safe Start (90%) ✓ Fits season (101 days to spare)
Transplant: Apr 15 🍅 Harvest: Jun 17 – Aug 12

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.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 202 gal / 100 sq ft
Drought risk

Water stress score is 6/10 โ€” consider drought-tolerant varieties and mulching

Corn needs ~1,700 GDD — county provides 4,738 GDD Excellent fit

Corn Planting Timeline โ€” Collingsworth County, TX

Corn Planting Calendar

Activity When Date Range
Direct Sow April 4 Apr 4 โ€“ Apr 25
Harvest June 6 Jun 6 โ€“ Aug 1

Plant 1" deep ยท 12" apart ยท Rows 36" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May โ€”
June Harvest
July Harvest
August Harvest
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

60โ€“100 days

Soil pH

6 โ€“ 7

USDA Zone

Zone 7a

Growing Season

223 days

Growing Tips for Collingsworth County

Plant in blocks of at least 4 rows rather than single rows for proper pollination. Direct sow after soil reaches 60F. Side-dress with nitrogen when plants are knee-high.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Celery

Level Up Your Garden

Frequently Asked Questions

When should I plant Corn in Collingsworth County, TX?

Collingsworth County is in Zone 7a with an average last frost of March 28. Plan your Corn planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Collingsworth County, TX?

Collingsworth County, Texas is in USDA Hardiness Zone 7a. The average last spring frost is March 28 and first fall frost is November 6.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Collingsworth County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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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 Collingsworth County, TX. Local conditions may vary. Last updated: April 2026.