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When to Plant Corn in De Baca County, NM

De Baca County, New Mexico Zone 7a May

Your May planting checklist for De Baca County, New Mexico

Your garden in De Baca County, New Mexico is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost April 24
Avg. first frost October 19
Soil temp (4") 53°F
Watering Critical
Pest pressure Moderate
Daylight 13.8 hrs
  1. Outdoor sowing time: corn

    Your soil is 53°F — warm enough for these to germinate without babying.

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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.

De Baca County, New Mexico is in USDA Zone 7a. The average last spring frost is April 24 and the first fall frost is October 19, giving you a growing season of approximately 178 days.

At an elevation of 4,981 feet, De Baca County receives approximately 15.4 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 93°F, providing good warmth for Corn during the growing season. Sandy soil warms quickly in spring — great for early planting — 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.

De Baca County, NM (Zone 7a) Moderate season
178 days
Last Spring Frost April 24
178 growing days
First Fall Frost October 19

De Baca County Soil Profile

Soil Type

Sandy Loam

Soil pH

7-8.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (58 days to spare)
Transplant: Apr 19 🍅 Harvest: Jun 21 – Aug 16
Recommended (50%) ✓ Fits season (59 days to spare)
Transplant: Apr 24 🍅 Harvest: Jun 26 – Aug 21
Safe Start (90%) ✓ Fits season (67 days to spare)
Transplant: May 5 🍅 Harvest: Jul 7 – Sep 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 De Baca County

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

Soil pH

Your soil pH (7.0–8.4) is more alkaline than Corn prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Drainage

Drainage is adequate for Corn.

Organic Matter

Organic matter is low (0.9%). Add 2-3 inches of compost before planting Corn.

How to Plant Corn

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

Succession Planting Corn

3
successive plantings in your 178-day season

Sow every 6.9 weeks. Last sowing by Jul 11 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.4″/week
You supply
1.9″/week
Watering frequency 2-3 times/week
Season total 3,016 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Corn

Corn 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 Corn Needs Rainfall You Supplement Action
Jan 1.1" 0" ❄️ Dormant
Feb 1" 0" ❄️ Dormant
Mar 0.8" 0" ❄️ Dormant
Apr 6.5" 0.5" 6" 🚿 Regular watering
May 6.5" 0.3" 6.2" 🚿 Regular watering
Jun 6.5" 0.6" 5.9" 🚿 Regular watering
Jul 6.5" 2.4" 4.1" 🚿 Regular watering
Aug 6.5" 2.9" 3.6" 🚿 Regular watering
Sep 6.5" 2.4" 4.1" 🚿 Regular watering
Oct 6.5" 1.3" 5.2" 🚿 Regular watering
Nov 0.9" 0" ❄️ Dormant
Dec 1.1" 0" ❄️ Dormant

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

Corn 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.

Corn needs ~1,580 GDD — county provides 3,515 GDD Excellent fit

Corn Planting Timeline — De Baca County, NM

Corn Planting Calendar

Activity When Date Range
Direct Sow May 1 May 1 – May 22
Harvest July 3 Jul 3 – Aug 28

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 2-3 times/week

📅 Days to Maturity

60–100 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7a

📆 Growing Season

178 days in De Baca County

Growing Tips for Corn in De Baca County

Direct sow Corn outdoors after April 24 in De Baca County when soil has warmed and frost danger has passed.

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

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

De Baca County receives only 15" of rain annually. Corn needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

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 De Baca County, NM?

De Baca County is in Zone 7a with an average last frost of April 24. Plan your Corn planting based on this frost date — see the calendar above for exact timing.

What planting zone is De Baca County, NM?

De Baca County, New Mexico is in USDA Hardiness Zone 7a. The average last spring frost is April 24 and first fall frost is October 19.

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Your De Baca County Garden Planner — Free

A 24-page printable planner built for De Baca County (Zone 7a). 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 De Baca County, NM. 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.