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When to Plant Corn in Gillespie County, TX

Corn

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.

Gillespie County, Texas is in USDA Zone 8b. The average last spring frost is March 19 and the first fall frost is November 14, giving you a growing season of approximately 240 days.

At an elevation of 3,036 feet, Gillespie County receives approximately 65.8 inches of rainfall annually with predominantly loam soil. Summer highs average 91°F, providing good warmth for Corn during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Corn root diseases.

Gillespie County, TX (Zone 8b) Long season
240 days
Last Spring Frost March 19
240 growing days
First Fall Frost November 14

Gillespie County Soil Profile

Soil Type

Loam

Soil pH

6.0-7.0

Drainage

Well Drained

How Much Corn to Grow

1-2 ears
Average yield per plant
15
Plants per person
30 sq ft
Space per person

For a family of 4, plant approximately 60 corn plants in about 120 sq ft. In Gillespie County's 240-day season, you'll have plenty of time for a full harvest. Plan your garden layout →

Corn Planting Timeline — Gillespie County, TX

Corn Planting Calendar

Activity When Date Range
Direct Sow March 26 Mar 26 – Apr 16
Harvest May 28 May 28 – Jul 23

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 8b

📆 Growing Season

240 days in Gillespie County

Growing Tips for Gillespie 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Corn in Gillespie County, TX?

Gillespie County is in Zone 8b with an average last frost of March 19. Plan your Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is Gillespie County, TX?

Gillespie County, Texas is in USDA Hardiness Zone 8b. The average last spring frost is March 19 and first fall frost is November 14.

🌱

Your Gillespie County Garden Planner — Free

A 22-page printable planner built for Gillespie 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.

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 Gillespie County, TX. Local conditions may vary. Last updated: July 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.