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When to Plant Sweet Corn in Andrews County, TX

Sweet corn is bred for high sugar content in its kernels, which convert to starch rapidly after harvest. Modern supersweet varieties hold their sweetness longer.

Andrews 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 1,776 feet, Andrews County receives approximately 52.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 100ยฐF, so Sweet Corn may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring โ€” great for early planting โ€” but Sweet Corn will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Sweet Corn root diseases.

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

Andrews County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.5-8.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (122 days to spare)
Transplant: Mar 19 🍅 Harvest: May 21 – Jul 2
Recommended (50%) ✓ Fits season (118 days to spare)
Transplant: Mar 29 🍅 Harvest: May 31 – Jul 12
Safe Start (90%) ✓ Fits season (115 days to spare)
Transplant: Apr 18 🍅 Harvest: Jun 20 – Aug 1

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 Andrews County

How your county's soil matches Sweet Corn's growing requirements.

Soil pH

Your soil pH (7.5โ€“8.2) is more alkaline than Sweet Corn prefers (6.0โ€“7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is low (1.1%). Add 2-3 inches of compost before planting Sweet Corn.

How to Plant Sweet Corn

1"
Planting Depth
12"
Between Plants
36"
Between Rows

Succession Planting Sweet Corn

4
successive plantings in your 223-day season

Sow every 6.9 weeks. Last sowing by Aug 09 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.0″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 1,231 gal / 100 sq ft
Drought risk

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

Sweet Corn needs ~1,875 GDD — county provides 5,575 GDD Excellent fit

Sweet Corn Planting Timeline โ€” Andrews County, TX

Sweet Corn Planting Calendar

Activity When Date Range
Direct Sow April 5 Apr 5 โ€“ Apr 26
Harvest June 7 Jun 7 โ€“ Jul 19

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 โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

1.5"/week ยท 1-2 times/week

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: too_alkaline

๐Ÿ—บ๏ธ USDA Zone

Zone 7b

๐Ÿ“† Growing Season

223 days in Andrews County

Growing Tips for Sweet Corn in Andrews County

Direct sow Sweet Corn outdoors after March 29 in Andrews County when soil has warmed and frost danger has passed.

Sandy soil in Andrews County dries quickly โ€” mulch Sweet Corn with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 100ยฐF in Andrews County, provide afternoon shade for Sweet Corn and water deeply in the morning.

Common pests for Sweet Corn in this region include corn earworm and corn borers. Use row covers early in the season and inspect plants weekly.

General growing tips

Plant in blocks of at least 4 rows for wind pollination. Direct sow after soil is warm. Isolate supersweet varieties from other corn types to prevent cross-pollination.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes

Level Up Your Garden

Frequently Asked Questions

When should I plant Sweet Corn in Andrews County, TX?

Andrews County is in Zone 7b with an average last frost of March 29. Plan your Sweet Corn planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Andrews County, TX?

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

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Andrews County gardeners in Zone 7b 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 Andrews County, TX. Local conditions may vary. Last updated: April 2026.