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When to Plant Corn in Cibola County, NM

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.

Cibola County, New Mexico is in USDA Zone 6a. The average last spring frost is May 23 and the first fall frost is October 2, giving you a growing season of approximately 132 days.

At an elevation of 4,342 feet, Cibola County receives approximately 15.2 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 88ยฐF, providing good warmth for Corn during the growing season. 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. With low rainfall, drip irrigation is essential for growing Corn successfully. Mulch heavily to conserve soil moisture.

Cibola County, NM (Zone 6a) Short season
132 days
Last Spring Frost May 23
132 growing days
First Fall Frost October 2

Cibola County Soil Profile

Soil Type

Sandy Loam

Soil pH

7.1-8.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (15 days to spare)
Transplant: May 13 🍅 Harvest: Jul 15 – Sep 9
Recommended (50%) ✓ Fits season (13 days to spare)
Transplant: May 23 🍅 Harvest: Jul 25 – Sep 19
Safe Start (90%) ✓ Fits season (7 days to spare)
Transplant: Jun 10 🍅 Harvest: Aug 12 – Oct 7

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
0.5″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 728 gal / 100 sq ft
Drought risk

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

Corn needs ~1,280 GDD — county provides 2,112 GDD Excellent fit

Corn Planting Timeline โ€” Cibola County, NM

Corn Planting Calendar

Activity When Date Range
Direct Sow May 30 May 30 โ€“ Jun 20
Harvest August 1 Aug 1 โ€“ Sep 26

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May Direct Sow
June Direct Sow
July โ€”
August Harvest
September Harvest
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 6a

Growing Season

132 days

Growing Tips for Cibola 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

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Frequently Asked Questions

When should I plant Corn in Cibola County, NM?

Cibola County is in Zone 6a with an average last frost of May 23. Plan your Corn planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Cibola County, NM?

Cibola County, New Mexico is in USDA Hardiness Zone 6a. The average last spring frost is May 23 and first fall frost is October 2.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Cibola County gardeners in Zone 6a 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 Cibola County, NM. Local conditions may vary. Last updated: April 2026.